May 21, 2025

 

Notable earthquakes and events:

 

A strong earthquake of M 6.3-6.6 occurred in the Papua New Guinea today. This event was not immediately reported felt through NEIC nor EMSC but was probably felt near Wewak in the area of northern Papua New Guinea.

The last earthquake in this area within about 200 km of this epicenter with M>=6.6

occurred on March 23, 2024 wotj M 6.9. At the time this summary noted:

 

 

"A major earthquake of M 6.9-7.0 occurred today in Papua New Guinea. NEIC reported to have been felt with intensity VIII in Ambunti, New Guinea.

EMSC reported intensity IV-V in Madang Province and light shaking in Goroka in Eastern Highlands Province, Papua, New Guinea.

Aftershocks of M 5.1 and 5.2 were also felt in New Buinea at Ambunti." (March 23, 2024)

 

It is likely that this event was promoted by the strong geomagnetic storm

of the past several days as it occurred at the sixth node (60 degrees) from

the South Geomagnetic Pole and at 90 degrees (node 4) from the north Geomagnetic

pole and was also at the seventh node (51.4 degrees) from the M 6.8 in Macquarie

Island of April 29. When the geomagnetic storm began this summary noted:

 

"The strongest geomagnetic storm since May 2, 2025 occurred today. AP reached 38 with high latitude A reaching 51. KP reached 6 mid-day and also early on May 18.

... Strong geomagnetic storms can help promoted enhanced seismicity at high

latitudes and at nodal distances from the south and north geomagnetic poles

in the first day(s) of the storm." (May 17, 2025)

 

Today's event in Papua New Guinea occurred near local solar midnight

and was probably promoted by tidal and geomagnetic effects which maximize

near this hour.

 

Forecast 172229 had expected today's event was likely within about 50 around May 18.

 

O: 20MAY2025 15:05:59   3.5S  144.9E MW=6.6  ANSS   PAPUA NEW GUINEA              

P: 18MAY2025 172229     4.0S  145.0E 4.0-5.4 BAAAA  New Ireland                

 

 

The antipode of this New Guinea event is at 4N 35W in the Central mid-Atlantic, an active seismic zone.

 

May 20, 2025

 

A moderately strong earthquake of M 5.6 occurred in the North Atlantic today. This event south of the Azores was not reported felt.

 

An M 3.8 earthquake shook the area north of Los Angeles, California near local solar noon today.

This was related to a solar flare that occurred when the area was at local solar midnight, 12 hours earlier

as noted in the previous issue of this summary:

 

"A moderately strong solar flare occurred at this writing. This flare of M3.2 class occurred near local solar midnight along the west coast of the U.S. and may enhance seismicity in that region in the next day." (May 19, 2025)

 

and

 

"A moderately strong solar flare occurred at this writing. This flare of M3.2 class occurred near local solar midnight along the west coast of the U.S. and may enhance seismicity in that region in the next day.

This interrupts a strong quiet period of solar flare activity and could

enhance seismicity at local solar noon in the general area at 35 East longitude of eastern Turkey and Iran and at solar midnight near 125 West longitude in the U.S. West Coast." (May 19, 2025)

 

An unusual M 5.0 also occurred today in the area of Georgetown, Saint Helena in the southern Atlantic Ocean. It occurred near local solar noon and may have been tidally promoted.

 

NORTH ATLANTIC

 

A moderately strong earthquake of M 5.6 occurred in the North Atlantic today. This event south of the Azores was not reported felt.

This is the largest earthquake in the North Atlantic within about 250 km of this

epicenter since an M 6.1 on January 4, 2022 and an M 6.2 on February 14, 2019.

At the time this summary noted:

 

 

"A strong earthquake also occurred in the North Atlantic Ocean today with M 6.1.

It followed a smaller earthquake to the southwest earlier in the day and occurred

near local solar midnight. It was probably promoted by strong tidal stresses with

the current new moon ..." (January 4, 2022)

 

and

 

"A strong earthquake of M 6.2, followed by an M 5.0 aftershock occurred in the Northern Mid-Atlantic Ridge today.

These events were not felt in this remote area and no tsunami was generated

or expected. This is located at an unusual epicenter south of the Azores.

The last earthquake within about 250 km of this epicenter in the Northern

Mid-Atlantic Ridge occurred as an M 6.3 on May 24, 2010. Other events in the

region in the past 30 years with equal or greater magnitude occurred in August, 1990 (M 6.3);

April, 1995 (M 6.2); April, 2003 (M 6.1)." (February 14, 2022)

 

Today's event in the North Atlantic may have been promoted by SFE from

a C6.0 solar flare which began about the time of the North Atlantic earthquake.

Data for this flare from SWPC follow:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

XXXX       0510   0530      0540   C6.0      (May 20, 2025)   1.1E-03*

North Atlantic M 5.6 05:10 UT

 

Forecast 172322 had expected this area of the north Atlantic to see enhanced

seismicity around May 19, 2025.

 

O: 20MAY2025 05:11:33  35.4N   36.1W MW=5.6  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 19MAY2025 172322    38.0N   32.0W 4.0-5.8 ACCAA  No. Mid-Atlantic Ridge     

 

Moderately large ocean ridge events also occurred today in the Ascension Island area of the South Atlantic (M 5.0) and in the Area near Easter Island

in the South Pacific. Data for these events follow:

 

 

Forecast 172232 had anticipated the M 5.0 in Ascension Island was likely around May 17.

 

O: 19MAY2025 14:01:21   7.1S   13.1W MB=5.0  EMSC   ASCENSION ISLAND REGION      

P: 17MAY2025 172232     5.0S   12.0W 4.0-5.6 ABAAA  No. of Ascension Isl       

 

Forecast 172440 had anticipated the M 5.4 in Eastern Island area  was likely around May 14.

 

O: 19MAY2025 11:17:01  35.8S  103.0W MW=5.4  EMSC   SOUTHEAST OF EASTER ISLAND   

P: 14MAY2025 172440    35.0S  109.0W 4.0-5.7 BACAA  So. East Pacific Rise      

 

CENTRAL CALIFORNIA

 

An M 3.8 earthquake shook areas of Central California north of Los Angeles today. NEIC reported it was felt with maximum intensity V in California at Chatsworth and II in Los Angeles, Walnut, Ventura, with lesser shaking in Valencia  and Castaic.

A light aftershock of M 2.5 occurred about 10 minutes after the mainshock. NEIC reported it was felt with intensity II in Chatsworth, Frazier Park, Redlands and Beverly Hills, California.

This M 3.8 is the strongest earthquake recorded in southern California within about

150 km of this epicenter since an M 3.9 on March 17, 2025 in Los Angeles, 125 km southeast of today's epicenter and the

strongest within about 100 km since an M 5.2 on August 7, 2024 (and an aftershock of M 4.4 on August8, 2024) near the same epicenter

as today's quake. It is  the strongest aftershock since August, 2024. At the time

this summary noted:

 

"A moderately strong earthquake of M 5.2-5.4 occurred north of Los Angeles, California today in the Bakersfield area. NEIC reported intensity up to VII for this event with V in Bakersfield, Frazier Park; IV in Lamont, Arvin, Taft, Maricopa (VI), Shafter, Keene, Lebec, Tahachapi, Sosamond, McFarland, Caliente, Wasco, Ojai, Lake Hugues, New Cuyama, Castaic, Delano, Lancaster, Los Angeles and as far as Arizona, Oregon, Utah, Sonora, Mexico, and Washington State.

Minor damage was reported by the press with this earthquake. A strong series of

aftershocks followed including an M 4.5 about a minute after the mainshock which

was felt with intensity up to VI." (August 7, 2024)

 

The M 3.8 in California today had been expected in the previous issue of this summary.

When an M3.2 solar flare occurred near local solar midnight at this California

epicenter this summary noted immediately:

 

"A moderately strong solar flare occurred at this writing. This flare of M3.2 class occurred near local solar midnight along the west coast of the U.S. and may enhance seismicity in that region in the next day." (May 19, 2025)

 

and

 

"A moderately strong solar flare occurred at this writing. This flare of M3.2 class occurred near local solar midnight along the west coast of the U.S. and may enhance seismicity in that region in the next day.

This interrupts a strong quiet period of solar flare activity and could

enhance seismicity at local solar noon in the general area at 35 East longitude of eastern Turkey and Iran and at solar midnight near 125 West longitude in the U.S. West Coast." (May 19, 2025)

 

Data for this flare from SWPC follow:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

4400       0813   0821      0845   M3.2      (May 19, 2025)   1.1E-02

Central California M 3.8 19:09 UT

Easter Island M 5.4 11:17 UT

 

This solar flare was highly unusual, the largest in a very quiet solar flare

period over the past five days - since an M4.7 (#3480) on May 14, 2025.

The only other M-class flare since May 14, was an M 2.1 (#3690) on May 15.

 

This epicenter in Central California is at 102 degrees from the M 7.4 in the Drake Passage of May 2 and may have been promoted by energy from that source.

 

Forecast 172336 had expected this activity in Central California within

about 10 km of this epicenter was likely around May 16.

 

O: 19MAY2025 19:19:21  35.0N  119.0W ML=2.5  EMSC   CENTRAL CALIFORNIA           

O: 19MAY2025 19:09:19  35.0N  119.0W MW=3.8  EMSC   CENTRAL CALIFORNIA           

O: 19MAY2025 22:04:52  34.9N  119.0W ML=2.3  EMSC   CENTRAL CALIFORNIA           

O: 19MAY2025 19:11:07  35.0N  119.0W ML=2.5  EMSC   CENTRAL CALIFORNIA           

P: 16MAY2025 172336    34.9N  119.0W 2.5-4.8 BAAAA  So. California             

 

The strongest earthquake in the U.S. or Canada today was an M 4.4 in the Alaska Peninsula near Unimak, Alaska. NEIC reported it was felt with intensity III in King Cove and II in Sand Point, Alaska.

An aftershock of M 3.5 was felt with intensity II in Sand Point, Alaska.

 

Forecast 172408 had expected this event within about 25 km was likely around May 14.

 

O: 19MAY2025 15:18:58  54.4N  161.7W ML=3.5  EMSC   ALASKA PENINSULA             

O: 19MAY2025 15:06:35  54.4N  161.7W MW=4.4  EMSC   ALASKA PENINSULA             

P: 14MAY2025 172408    54.6N  161.7W 3.5-5.1 BAAAA  Unimak Islands, Aleutians  

 

NEIC reported an earthquake of M 2.5 in Southern Alaska was felt with  intensity up to II-III in the area(s) of Southern Alaska in Anchorage.

 

NEIC reported an earthquake of M 3.4 in the Alaska Peninsula may have been felt with  intensity up to II-III in the area(s) of the Alaska Peninsula with III in Anchorage and Wasilla.

 

NEIC reported an earthquake of M 5.1 south of Tonga  was felt with  intensity up to II-III in the area(s) of Tonga at Tofoa-Koloua, Tangatapu.

 

An unusual M 5.0 also occurred today in the area of Georgetown, Saint Helena in the southern Atlantic Ocean. It occurred near local solar noon and may have been tidally promoted.

 

PHIVOLCS reported an earthquake of M 4.9 in northern Mindanao, Philippines  was felt with  intensity up to IV in the area(s) of  northern Mindanao, Philippines with III in Don Carlos, Impasug-ong, Kadingilan, Kalilangan, Kibawe, Manolo Fortich, Maramag and Quezon, Bukidnon; Montevist, Davao de Oror; Kapalong, Santo Tomas and City of Tagum, Davao del Norte; Antipas, Arakan, City of Kidapawan, Magpet and President Roxas, Cotabato  and II in City of Cagayan de Oro, Davao de Oro, Daval del Nort, Davao del Sur.

 

EMSC reported an earthquake of M 4.1 in Central Afghanistan was felt with  intensity up to IV in the area(s) of Central Afghanistan

 

No Tropical Cyclones are currently active.

 

A moderately strong solar flare occurred at this writing. This flare of M3.2 class occurred near local solar midnight along the west coast of the U.S. and may enhance seismicity in that region in the next day.

This interrupts a strong quiet period of solar flare activity and could

enhance seismicity at local solar noon in the general area at 35 East longitude of eastern Turkey and Iran and at solar midnight near 125 West longitude in the U.S. West Coast.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

XXXX       0510   0530      0540   C6.0      (May 20, 2025)   1.1E-03*

North Atlantic M 5.6 05:10 UT

 

4400       0813   0821      0845   M3.2      (May 19, 2025)   1.1E-02

Central California M 3.8 19:09 UT

Easter Island M 5.4 11:17 UT

Greece M 4.1 08:14 UT

 

 

4340       0024   0036      0050   C1.2      (May 19, 2025)   3.8E-04      

Greece M 4.5 00:24 UT

 

4360       0419   0432      0439   C2.3      (May 19, 2025)   2.9E-04      

Sumatra M 3.9 04:31 UT

 

4380       0528   0542      0553   C1.2      (May 19, 2025)   1.6E-03      

Kermadec Islands M 5.3 05:48 UT

Los Angeles M 2.2 05:41 UT

Oaxaca M 4.2 05:56 UT

Sumatra M 4.7 05:59 UT

 

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:   minor storms May 19 active May 20-21.  Solar M-flare chance: 25% X-class: 5% proton storm: 1%

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)    22 40 13 16:00 6   45 119

 

A strong Gamma Ray Burst was recorded by SWIFT on May   16, 2025 at 14:35:29 UT (#250516A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    9, 2025 at 22:33:30 UT (#250509A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the M 6.8 in Macquarie Island region (white stipples).

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05 20 05 11 2025  35.4  -36.1 5.6 NORTHERN MID-ATLANTIC RIDGE    M107 SG151 T140 D95 MA159 Z159 NG59

05 20 04 53 2025  31.7 -104.4 2.8 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 20 04 27 2025 -15.7  -75.3 4.0 NEAR COAST OF CENTRAL PERU     M169 SG97 T92 D41 MA98 Z96 NG109

05 20 03 29 2025   4.8  123.8 4.0 CELEBES SEA                    M31 SG68 T66 D127 MA64 Z63 NG81

05 20 03 13 2025 -21.1  -68.6 4.3 ANTOFAGASTA, CHILE             M165 SG93 T96 D35 MA96 Z96 NG114

05 20 02 59 2025  38.8 -122.7 2.1 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05 20 02 11 2025  19.0  -67.1 3.4 PUERTO RICO REGION             M135 SG132 T111 D75 MA132 Z129 NG75

05 20 01 43 2025  -4.6  -76.8 4.0 NORTHERN PERU                  M161 SG107 T95 D52 MA107 Z104 NG98

05 19 23 58 2025  28.7  -14.5 2.3 CANARY ISLANDS, SPAIN REGION   M96 SG139 T159 D96 MA153 Z160 NG65

05 19 23 43 2025  57.3 -156.8 3.4 ALASKA PENINSULA               M80 SG131 T78 D133 MA117 Z109 NG31

05 19 23 31 2025 -31.3 -178.4 5.1 KERMADEC ISLANDS REGION        M97 SG43 T11 D74 MA29 Z21 NG117

05 19 23 11 2025   8.8  127.0 4.2 MINDANAO, PHILIPPINES          M32 SG72 T64 D130 MA67 Z65 NG77

05 19 22 28 2025 -24.9  -70.2 4.3 ANTOFAGASTA, CHILE             M166 SG89 T93 D31 MA92 Z92 NG118

05 19 22 27 2025 -24.0  -66.9 4.6 JUJUY, ARGENTINA               M164 SG90 T96 D32 MA94 Z94 NG117

05 19 22 26 2025  15.1  -61.3 3.5 DOMINICA REGION, LEEWARD ISLAN M136 SG130 T115 D71 MA131 Z129 NG79

05 19 22 04 2025  34.9 -119.0 2.3 CENTRAL CALIFORNIA             M114 SG127 T75 D100 MA115 Z106 NG56

05 19 21 36 2025 -11.0  111.2 4.8 SOUTH OF JAVA, INDONESIA       M36 SG55 T72 D112 MA55 Z58 NG97

05 19 21 14 2025  72.7    3.3 3.8 NORWEGIAN SEA                  M69 SG160 T127 D138 MA157 Z154 NG20

05 19 21 01 2025  73.3    7.4 3.9 GREENLAND SEA                  M68 SG159 T126 D139 MA156 Z152 NG19

05 19 20 49 2025  -2.6  138.7 4.3 PAPUA, INDONESIA               M48 SG61 T49 D116 MA53 Z50 NG88

05 19 20 41 2025  30.3   57.5 3.3 EASTERN IRAN                   M35 SG111 T132 D134 MA118 Z123 NG59

05 19 20 34 2025 -23.9 -179.3 4.5 SOUTH OF FIJI ISLANDS          M94 SG49 T6 D81 MA35 Z27 NG110

05 19 19 44 2025 -10.6  166.2 4.4 SANTA CRUZ ISLANDS             M76 SG57 T21 D99 MA44 Z37 NG96

05 19 19 19 2025  35.0 -119.0 2.5 CENTRAL CALIFORNIA             M114 SG127 T75 D101 MA115 Z106 NG56

05 19 19 11 2025  35.0 -119.0 2.5 CENTRAL CALIFORNIA             M114 SG127 T75 D101 MA115 Z106 NG56

05 19 19 09 2025  35.0 -119.0 3.8 CENTRAL CALIFORNIA             M114 SG127 T75 D101 MA115 Z106 NG56

05 19 18 03 2025  41.8   88.1 4.8 SOUTHERN XINJIANG, CHINA       M20 SG111 T109 D158 MA111 Z112 NG45

05 19 16 59 2025  -6.3  152.1 4.4 NEW BRITAIN REGION, P.N.G.     M61 SG58 T35 D109 MA47 Z43 NG92

05 19 16 46 2025  -5.8  148.4 4.3 NEW BRITAIN REGION, P.N.G.     M58 SG58 T39 D110 MA48 Z44 NG91

05 19 16 28 2025 -37.8  -73.3 4.0 BIO-BIO, CHILE                 M161 SG76 T85 D19 MA79 Z79 NG131

05 19 16 20 2025   8.8  126.7 4.5 MINDANAO, PHILIPPINES          M32 SG72 T65 D130 MA67 Z66 NG77

05 19 16 14 2025 -15.8  -74.5 4.0 NEAR COAST OF SOUTHERN PERU    M169 SG97 T93 D41 MA98 Z97 NG109

05 19 15 41 2025  27.7  -18.2 3.2 CANARY ISLANDS, SPAIN REGION   M99 SG139 T156 D94 MA153 Z159 NG66

05 19 15 27 2025  17.2  -68.5 3.8 DOMINICAN REPUBLIC REGION      M138 SG130 T109 D73 MA130 Z126 NG76

05 19 15 24 2025 -24.5 -175.0 5.1 SOUTH OF TONGA                 M98 SG50 T4 D78 MA37 Z28 NG111

05 19 15 18 2025  54.4 -161.7 3.5 ALASKA PENINSULA               M79 SG127 T75 D134 MA113 Z106 NG33

05 19 15 06 2025  54.4 -161.7 4.4 ALASKA PENINSULA               M79 SG127 T75 D134 MA113 Z106 NG33

05 19 14 56 2025  36.0 -120.6 2.0 CENTRAL CALIFORNIA             M112 SG127 T75 D102 MA115 Z106 NG55

05 19 14 40 2025  34.9   69.0 4.2 CENTRAL AFGHANISTAN            M26 SG111 T123 D143 MA115 Z118 NG53

05 19 14 15 2025 -31.6  -68.7 4.4 SAN JUAN, ARGENTINA            M163 SG83 T91 D25 MA86 Z87 NG125

05 19 14 01 2025  -7.1  -13.1 5.0 ASCENSION ISLAND REGION        M110 SG105 T146 D65 MA118 Z124 NG100

05 19 12 11 2025  52.6  160.3 4.0 OFF EAST COAST OF KAMCHATKA    M57 SG117 T75 D152 MA106 Z100 NG33

05 19 12 00 2025  28.4   87.2 4.3 WESTERN XIZANG                 M10 SG99 T106 D146 MA100 Z103 NG59

05 19 11 17 2025 -35.8 -103.0 5.4 SOUTHEAST OF EASTER ISLAND     M158 SG70 T63 D31 MA68 Z65 NG127

05 19 11 17 2025 -18.0  -69.9 4.6 SOUTHERN PERU                  M166 SG96 T96 D38 MA98 Z97 NG111

05 19 11 17 2025  31.6 -104.6 2.0 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05 19 11 07 2025  42.0   48.1 4.0 CAUCASUS REGION, RUSSIA        M44 SG125 T138 D137 MA131 Z136 NG48

05 19 10 53 2025  31.6 -104.0 2.2 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 19 10 49 2025  32.1 -115.1 3.0 BAJA CALIFORNIA, MEXICO        M118 SG126 T76 D97 MA115 Z107 NG59

05 19 10 07 2025  30.9 -115.5 3.1 BAJA CALIFORNIA, MEXICO        M119 SG125 T75 D96 MA114 Z105 NG60

05 19 09 54 2025  19.0 -105.2 4.1 OFFSHORE JALISCO, MEXICO       M134 SG119 T77 D81 MA110 Z103 NG73

05 19 09 45 2025 -18.7  -67.4 4.3 ORURO, BOLIVIA                 M163 SG95 T98 D38 MA98 Z98 NG112

05 19 09 26 2025  17.7  -95.0 4.1 VERACRUZ, MEXICO               M139 SG122 T86 D77 MA115 Z109 NG74

05 19 08 14 2025  37.4   21.5 4.1 SOUTHERN GREECE                M64 SG133 T158 D120 MA144 Z151 NG54

05 19 08 04 2025   1.2   97.2 4.7 NIAS REGION, INDONESIA         M20 SG70 T89 D123 MA72 Z76 NG85

05 19 06 22 2025  18.9 -107.4 4.1 OFF COAST OF JALISCO, MEXICO   M133 SG118 T75 D82 MA109 Z102 NG72

05 19 05 59 2025   1.1   97.1 4.7 NIAS REGION, INDONESIA         M20 SG70 T89 D123 MA72 Z76 NG85

05 19 05 56 2025  15.7  -96.5 4.2 OAXACA, MEXICO                 M140 SG120 T84 D76 MA113 Z107 NG76

05 19 05 48 2025 -30.2 -177.2 5.3 KERMADEC ISLANDS, NEW ZEALAND  M98 SG45 T10 D74 MA31 Z22 NG116

05 19 05 41 2025  34.3 -118.4 2.2 GREATER LOS ANGELES AREA, CALI M115 SG127 T75 D100 MA115 Z106 NG56

05 19 05 15 2025  59.4  -30.8 4.4 REYKJANES RIDGE                M87 SG171 T132 D119 MA173 Z165 NG35

 

COMPARISON OF FORECASTS AND EARTHQUAKES

 

Following are the comparisons of the closest forecast to today's earthquakes and the listing of the earthquakes sorted by latitude. For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

 

O: 19MAY2025 05:59:29   1.1N   97.1E MB=4.7  EMSC   NIAS REGION, INDONESIA       

O: 19MAY2025 08:04:21   1.2N   97.2E MB=4.7  EMSC   NIAS REGION, INDONESIA       

P: 15MAY2025 172217     2.0N   99.0E 4.0-5.4 BABAA  So. Sumatera               

 

O: 19MAY2025 20:49:17   2.6S  138.7E ML=4.3  EMSC   PAPUA, INDONESIA             

P: 19MAY2025 172233     2.0S  140.0E 4.0-5.4 AABAA  Papua New Guinea           

 

O: 20MAY2025 01:43:34   4.6S   76.8W ML=4.0  EMSC   NORTHERN PERU                

P: 12MAY2025 172231     6.0S   76.0W 4.0-5.4 CBAAA  No. Peru                   

 

O: 20MAY2025 03:29:49   4.8N  123.8E ML=4.0  EMSC   CELEBES SEA                  

P: 18MAY2025 172216     5.0N  126.0E 4.0-5.4 AABAA  Mindanao, Philippines      

 

O: 19MAY2025 16:46:44   5.8S  148.4E MB=4.3  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 19MAY2025 172228     6.0S  150.0E 4.0-5.5 AABAA  New Ireland                

 

O: 19MAY2025 16:59:32   6.3S  152.1E MB=4.4  EMSC   NEW BRITAIN REGION, P.N.G.   

P: 18MAY2025 172227     7.0S  153.0E 4.0-5.4 AAAAA  New Britain                

 

O: 19MAY2025 14:01:21   7.1S   13.1W MB=5.0  EMSC   ASCENSION ISLAND REGION      

P: 17MAY2025 172232     5.0S   12.0W 4.0-5.6 ABAAA  No. of Ascension Isl       

 

O: 19MAY2025 16:20:15   8.8N  126.7E MB=4.5  EMSC   MINDANAO, PHILIPPINES        

O: 19MAY2025 23:11:18   8.8N  127.0E ML=4.2  EMSC   MINDANAO, PHILIPPINES        

P: 18MAY2025 172209     7.0N  124.0E 4.0-5.4 ABCAA  Central Philippines        

 

O: 19MAY2025 19:44:30  10.6S  166.2E MB=4.4  EMSC   SANTA CRUZ ISLANDS           

P: 20MAY2025 172424    10.0S  160.0E 4.0-5.4 AACAA  No. of Santa Cruz Islands  

 

O: 19MAY2025 21:36:09  11.0S  111.2E MW=4.8  EMSC   SOUTH OF JAVA, INDONESIA     

P: 18MAY2025 172429    11.0S  115.0E 4.0-5.6 AACAA  So. of Indonesia           

 

O: 19MAY2025 22:26:40  15.1N   61.3W ML=3.5  EMSC   DOMINICA REGION, LEEWARD ISLAN

P: 17MAY2025 172255    15.0N   61.0W 3.0-5.4 AAAAA  Leeward Islands            

 

O: 19MAY2025 05:56:02  15.7N   96.5W ML=4.2  EMSC   OAXACA, MEXICO               

P: 17MAY2025 172265    15.0N   97.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O: 20MAY2025 04:27:35  15.7S   75.3W ML=4.0  EMSC   NEAR COAST OF CENTRAL PERU   

O: 19MAY2025 16:14:35  15.8S   74.5W ML=4.0  EMSC   NEAR COAST OF SOUTHERN PERU  

P: 13MAY2025 172428    16.0S   74.0W 4.0-5.6 CAAAA  So. Peru/Bolivia           

 

O: 19MAY2025 15:27:39  17.2N   68.5W MD=3.8  EMSC   DOMINICAN REPUBLIC REGION    

P: 18MAY2025 172267    18.0N   66.0W 3.4-5.0 AACAA  Puerto Rico                

 

O: 19MAY2025 09:26:09  17.7N   95.0W ML=4.1  EMSC   VERACRUZ, MEXICO             

P: 18MAY2025 172251    17.0N   94.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 19MAY2025 11:17:08  18.0S   69.9W MB=4.6  EMSC   SOUTHERN PERU                

P: 15MAY2025 172428    18.0S   69.0W 4.0-5.7 BAAAA  So. Peru/Bolivia           

P: 17MAY2025 172428    18.0S   72.0W 4.0-5.6 AABAA  So. Peru/Bolivia           

 

O: 19MAY2025 09:45:31  18.7S   67.4W MB=4.3  EMSC   ORURO, BOLIVIA               

P: 15MAY2025 172428    18.0S   69.0W 4.0-5.7 BABAA  So. Peru/Bolivia            

 

O: 19MAY2025 06:22:11  18.9N  107.4W ML=4.1  EMSC   OFF COAST OF JALISCO, MEXICO 

O: 19MAY2025 09:54:06  19.0N  105.2W ML=4.1  EMSC   OFFSHORE JALISCO, MEXICO     

P: 17MAY2025 172252    18.0N  106.0W 3.5-5.4 AAAAA  Coast of Jalisco, Mexico   

 

O: 20MAY2025 02:11:25  19.0N   67.1W MD=3.4  EMSC   PUERTO RICO REGION           

P: 17MAY2025 172274    20.0N   67.0W 3.0-4.4 AAAAA  Bahamas/No. Caribbean      

 

O: 20MAY2025 03:13:02  21.1S   68.6W MB=4.3  EMSC   ANTOFAGASTA, CHILE            

P: 17MAY2025 172433    21.0S   68.0W 4.0-5.7 BAAAA  Argentina                  

 

O: 19MAY2025 20:34:35  23.9S  179.3W MB=4.5  EMSC   SOUTH OF FIJI ISLANDS        

P: 17MAY2025 172446    27.0S  176.0W 4.0-5.6 ACCAA  Tonga Islands              

 

O: 19MAY2025 22:27:47  24.0S   66.9W MB=4.6  EMSC   JUJUY, ARGENTINA             

P: 15MAY2025 172433    24.0S   67.0W 4.0-5.8 BAAAA  Argentina                  

 

O: 19MAY2025 15:24:11  24.5S  175.0W MB=5.1  EMSC   SOUTH OF TONGA               

P: 17MAY2025 172446    27.0S  176.0W 4.0-5.6 ACAAA  Tonga Islands              

 

O: 19MAY2025 22:28:44  24.9S   70.2W ML=4.3  EMSC   ANTOFAGASTA, CHILE           

P: 19MAY2025 172436    23.0S   69.0W 4.0-5.6 ABAAA  Coast No. Chile            

 

O: 19MAY2025 15:41:52  27.7N   18.2W ML=3.2  EMSC   CANARY ISLANDS, SPAIN REGION 

O: 19MAY2025 23:58:28  28.7N   14.5W ML=2.3  EMSC   CANARY ISLANDS, SPAIN REGION 

P: 14MAY2025 172277    28.0N   16.0W 3.0-4.7 BABAA  Canary Islands             

 

O: 19MAY2025 12:00:09  28.4N   87.2E MB=4.3  EMSC   WESTERN XIZANG               

P: 19MAY2025 172285    27.0N   92.0E 4.0-5.5 ABCAA  Myanmar                    

 

 

O: 19MAY2025 05:48:31  30.2S  177.2W MW=5.3  EMSC   KERMADEC ISLANDS, NEW ZEALAND

P: 17MAY2025 172455    31.0S  177.0W 4.0-5.5 AAAAA  So. Kermadec Islands       

 

O: 19MAY2025 20:41:26  30.3N   57.5E ML=3.3  EMSC   EASTERN IRAN                 

P: 19MAY2025 172289    27.0N   56.0E 3.5-5.3 ACBAA  So. Iran/Persian Gulf      

 

O: 19MAY2025 10:07:58  30.9N  115.5W ML=3.1  EMSC   BAJA CALIFORNIA, MEXICO      

P: 17MAY2025 172331    32.9N  115.6W 2.5-4.6 ABAAA  So. California             

 

O: 19MAY2025 23:31:27  31.3S  178.4W MB=5.1  EMSC   KERMADEC ISLANDS REGION      

P: 19MAY2025 172456    31.0S  180.0W 4.0-5.5 AAAAA  So. Kermadec Islands       

 

O: 20MAY2025 04:53:16  31.7N  104.4W ML=2.8  EMSC   WESTERN TEXAS                

O: 19MAY2025 10:53:30  31.6N  104.0W ML=2.2  EMSC   WESTERN TEXAS                

O: 19MAY2025 11:17:41  31.6N  104.6W ML=2.0  EMSC   WESTERN TEXAS                

P: 17MAY2025 172329    32.5N  104.6W 2.0-3.9 AAAAA  SW U.S.A                   

 

O: 19MAY2025 14:15:30  31.6S   68.7W ML=4.4  EMSC   SAN JUAN, ARGENTINA          

P: 15MAY2025 172449    31.0S   69.0W 4.0-5.8 BAAAA  Central Chile              

 

O: 19MAY2025 10:49:20  32.1N  115.1W ML=3.0  EMSC   BAJA CALIFORNIA, MEXICO      

P: 17MAY2025 172331    32.9N  115.6W 2.5-4.6 AAAAA  So. California             

 

O: 19MAY2025 05:41:48  34.3N  118.4W ML=2.2  EMSC   GREATER LOS ANGELES AREA, CALI

P: 15MAY2025 172336    35.3N  118.6W 2.5-4.8 BAAAA  So. California             

 

O: 19MAY2025 14:40:10  34.9N   69.0E MB=4.2  EMSC   CENTRAL AFGHANISTAN          

P: 19MAY2025 172310    36.0N   69.0E 3.8-5.3 ABAAA  Hindu Kush/Pakistan        

 

O: 19MAY2025 19:19:21  35.0N  119.0W ML=2.5  EMSC   CENTRAL CALIFORNIA           

O: 19MAY2025 19:09:19  35.0N  119.0W MW=3.8  EMSC   CENTRAL CALIFORNIA           

O: 19MAY2025 22:04:52  34.9N  119.0W ML=2.3  EMSC   CENTRAL CALIFORNIA           

O: 19MAY2025 19:11:07  35.0N  119.0W ML=2.5  EMSC   CENTRAL CALIFORNIA           

P: 16MAY2025 172336    34.9N  119.0W 2.5-4.8 BAAAA  So. California             

 

O: 20MAY2025 05:11:33  35.4N   36.1W MW=5.6  EMSC   NORTHERN MID-ATLANTIC RIDGE  

P: 19MAY2025 172322    38.0N   32.0W 4.0-5.8 ACCAA  No. Mid-Atlantic Ridge     

 

O: 19MAY2025 11:17:01  35.8S  103.0W MW=5.4  EMSC   SOUTHEAST OF EASTER ISLAND   

P: 14MAY2025 172440    35.0S  109.0W 4.0-5.7 BACAA  So. East Pacific Rise      

 

O: 19MAY2025 14:56:11  36.0N  120.6W MD=2.0  EMSC   CENTRAL CALIFORNIA           

P: 17MAY2025 172326    35.6N  121.3W 2.5-4.5 AAAAA  Off So. California         

 

O: 19MAY2025 08:14:39  37.4N   21.5E ML=4.1  EMSC   SOUTHERN GREECE              

P: 18MAY2025 172319    39.0N   21.0E 3.0-4.6 AAAAA  No. Greece                 

 

O: 19MAY2025 16:28:07  37.8S   73.3W ML=4.0  EMSC   BIO-BIO, CHILE               

P: 18MAY2025 172450    37.0S   73.0W 4.0-5.7 AAAAA  Central Chile              

 

O: 20MAY2025 02:59:25  38.8N  122.7W MD=2.1  EMSC   NORTHERN CALIFORNIA          

P:  1MAY2025 172024    38.8N  122.7W 2.5-4.8 AAAAA  Central California         

 

O: 19MAY2025 18:03:13  41.8N   88.1E MB=4.8  EMSC   SOUTHERN XINJIANG, CHINA     

P:  7MAY2025 172079    36.0N   93.0E 3.8-5.2 DCCAA  Xizang                     

 

O: 19MAY2025 11:07:34  42.0N   48.1E MB=4.0  EMSC   CAUCASUS REGION, RUSSIA      

P: 16MAY2025 172361    40.0N   50.0E 4.0-5.7 BBBAA  Kazakhstan                  

 

O: 19MAY2025 12:11:40  52.6N  160.3E MB=4.0  EMSC   OFF EAST COAST OF KAMCHATKA  

P: 18MAY2025 172394    52.0N  160.0E 4.0-5.6 AAAAA  E. of Kamchatka            

 

O: 19MAY2025 15:18:58  54.4N  161.7W ML=3.5  EMSC   ALASKA PENINSULA             

O: 19MAY2025 15:06:35  54.4N  161.7W MW=4.4  EMSC   ALASKA PENINSULA             

P: 14MAY2025 172408    54.6N  161.7W 3.5-5.1 BAAAA  Unimak Islands, Aleutians  

 

O: 19MAY2025 23:43:44  57.3N  156.8W ML=3.4  EMSC   ALASKA PENINSULA              

P: 16MAY2025 172389    54.7N  156.9W 3.5-5.3 BCAAA  Alaska Peninsula           

 

O: 19MAY2025 05:15:28  59.4N   30.8W MB=4.4  EMSC   REYKJANES RIDGE              

P:  8MAY2025 172129    59.0N   31.0W 4.0-5.5 DAAAA  North Mid-Atlantic Ridge   

P: 16MAY2025 172399    58.0N   32.0W 4.0-5.4 BBAAA  North Mid-Atlantic Ridge   

 

O: 19MAY2025 21:14:43  72.7N    3.3E MB=3.8  EMSC   NORWEGIAN SEA                

P: 15MAY2025 172420    72.0N    0.0E 3.0-4.9 BAAAA  Norway                     

 

O: 19MAY2025 21:01:51  73.3N    7.4E MB=3.9  EMSC   GREENLAND SEA                

P: 16MAY2025 172420    74.0N   14.0E 3.0-4.7 BAAAA  Norway                     

 

 

 

May 19, 2025

 

A pair of earthquakes of M 4.4 and M 4.8 occurred northeast of Lake Baykal, Russia in the the Chitsinitsa Oblast. These are within about 300 km of exact antipodal to the M 7.4 in the Drak Passage (M 7.4 May 2). Antipodal effects probably helped trigger these events.

 

A moderately strong solar flare occurred at this writing. This flare of M3.2 class occurred near local solar midnight along the west coast of the U.S. and may enhance seismicity in that region in the next day.

 

The strongest geomagnetic storm since May 2, 2025 continued today. AP reached 22 with high latitude A reaching 40. KP reached 6 mid-day and also early on May 18.

The last storm of similar disturbance occurred beginning on May 2, 2025 with AP 39 and

high latitude A of 65. Maximum Kp with that storm reached 7.

Strong geomagnetic storms can help promoted enhanced seismicity at high

latitudes and at nodal distances from the south and north geomagnetic poles

in the first day of the storm. For example the last major earthquake in the

world - an M 7.4 on May 2 in the Drake Passage - coincided with the storm of May 2.

At the time of the geomagnetic storm on May 2, this summary noted:

 

“A severe geomagnetic storm occurred today with maximum high latitude KP reaching

7 around 12:00-14:00 UT. The high latitude A for the day was 68. This is

the strongest geomagnetic storm at high latitudes since A reach 113 on January 1, 2025.

The sudden commencement storms of this type can trigger seismic activity

centered at nodal distances from the South and North Geomagnetic poles where

charged particles interact with the ionosphere and earth. So it should not be

surprising to frequent readers of this summary that a magnitude M 7.4 earthquake

occurred at the high latitude of 55S at the height of this geomagnetic storm

at a distance of 60.0 degrees (node 6) from the South Geomagnetic Pole." (May 2, 2025)

 

 

 

A pair of earthquakes of M 4.4 and M 4.8 occurred northeast of Lake Baykal, Russia in the the Chitsinitsa Oblast. These are within about 300 km of exact antipodal to the M 7.4 in the Drak Passage (M 7.4 May 2). Antipodal effects probably helped trigger these events.

The last earthquake of M>=4.7 within about 200 km of today's activity was an M 5.0

a year ago on May 24, 2024 bu the last of significantly larger magnitude was an M 5.5

on September 22, 2021. At the time this summary noted:

 

 

"A moderately strong M 5.5 also hit in southern Siberia today in the Chitinskaya Oblast' area.

It was not reported felt in this region. This is the strongest earthquake within

about 250 km of this epicenter since an M 5.6 on May 23, 2014. The strongest

event in the area in the past 30 years was an M 5.9-6.0 on August 21, 1994." (September 22, 2021)

 

Today's event is located within about 150 km of the antipode of the M 7.4 in the Drake Passage or May 2, 2025

and had been anticipated as an antipodal event at the time as:

 

"Antipodal (~180 degrees)

 

Drake Passage to Mongolia, Siberia" (May 2, 2025)   

 

Today's activity near Laky Baykal, Russia began near local solar noon and

was likely promoted by tidal and geomagnetic activity with the strong geomagnetic

storm which peaked near the time of these events and which maximize effects

on the earth near this hour. Solar Flare 4190 (B8.2) was ending as this earthquake

in Russia occurred and may have helped trigger it through SFE.

Following is the SWPC data for this flare:

 

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

4190       0506   0520      0538   B8.2      (May 18, 2025)   1.4E-03      

Russia M 4.3 05:52 UT

El Salvador M 4.0 05:52 UT

Jalisco M 4.2 05:10 UT

 

This epicenter is at 104 degrees from the M 7.6 in the Caribbean of February 8 , 2025

and may have been promoted by energy from that source.

 

Forecast 172405 had expected today's activity in Siberia was likely within about

200 km around May 16-20.

 

O: 18MAY2025 07:26:29  56.2N  117.4E MB=4.7  EMSC   CHITINSKAYA OBLAST', RUSSIA  

O: 18MAY2025 07:26:29  56.2N  117.4E MB=4.8  GSRAS  CHITINSKAYA OBLAST', RUSSIA  

O: 18MAY2025 05:52:19  56.3N  117.3E MB=4.3  EMSC   CHITINSKAYA OBLAST', RUSSIA  

P: 16MAY2025 172405    58.0N  121.0E 3.0-4.6 ABBAA  So. Siberia                

P: 20MAY2025 172405    52.0N  116.0E 3.0-4.7 ACAAA  So. Siberia                 

 

The strongest earthquake in the the U.S. or Canada today was an M 4.5 south of Alaska.

This event was located at the third node (120 degrees) from the Macquarie Island

earthquake of M 6.8 of April 29 and was probably promoted by energy from that source.

Other earthquakes at this distance from Macquarie today occurred in western Texas.

 

An earthquake of M 4.5 last hit this area of the Gulf of Alaska as an M 4.5

on April 24, 2025 but the last of significantly larger magnitude within about 150

km of today's epicenter was an M 5.2 on October 3, 2007. Today's event

occurred within minutes of local solar midnight and may have been promoted

by tidal and/or geomagnetic effects which maximize near this hour.

 

Forecast 172410 had expected this earthquake was likely within about 100 km

around May 14, 2025.

 

O: 18MAY2025 09:55:43  58.2N  149.3W MW=4.5  EMSC   GULF OF ALASKA               

P: 14MAY2025 172410    59.0N  150.1W 3.2-5.1 AAAAA  Central Alaska             

 

NEIC reported an earthquake of M 4.9 in Mindanao, Philippines was felt with  intensity up to II-III in the area(s) of Mindanao, Philippines with III in Balila and Panabo and II in Kisante, Dologon, Mailag, San Carlos, Davao and Mawab.

EMSC reported light to moderate shaking in Mindanao at Davao City, Cagayan De Oro, and Guinsiliban, Camiguin Island.

PHIVOLCS reported intensity III in Santo Tomas, Davao del Norte; Don Carlos, Impasug-ong, Kadingitan, Kibawe, Manolo Fortich , Maramag and Quezon, Bukidnon; Antipas, Arakan, City of Kidapawan, Magpet, and President Roxas, Cotabato and II in Cotabato at Banisltan, M'Lang, Matalam and Tulunan.

 

Forecast 172209 had expected this event in Mindanao was likely within about 200 km

of this epicenter around May 18.

 

O: 19MAY2025 03:41:29   7.5N  125.8E MB=4.9  EMSC   MINDANAO, PHILIPPINES        

P: 18MAY2025 172209     7.0N  124.0E 4.0-5.4 AAAAA  Central Philippines        

 

NEIC reported an earthquake of M 4.5 in Greece was felt with  intensity up to II-III in the area(s) of Greece with V in Attiki at Amarousion; IV in Palaion, Faliron, III in Athens, Khalandrioin, Leontarion, Melissia, Nea Makri, Peuki, Pikermion and Vrilissia.

EMSC reported strong shaking in Greece at Paralia Politikon, Psachna, Drosia, Malesina, Chalkida, Chalcis, Vasiliko, Nea Lampsakos, Vathy, Arma, Malakonta, Arkitsa, Achladias, Skopelos, Oropos, Oinofyta, Thivaion among others

This activity in Greece is located at 144 degrees from the M 6.8 near Macquarie Island

of April 29, 2025 and may have been promoted by energy from that source. Other

moderate earthquakes at this distance from Macquarie Island today occurred as

an M 4.9 in Romania. It is also near the third node (120 degrees) from the

Drake Passage event of May 2 and could have been promoted by energy from that source.

 

Forecast 172293 had expected this activity within about 100 km was likely around

May 16-18, 2025.

 

O: 19MAY2025 00:23:32  38.7N   23.5E MW=4.5  EMSC   GREECE                       

P: 16MAY2025 172293    39.0N   25.0E 3.0-4.7 BAAAA  Aegean Sea                 

P: 18MAY2025 172293    38.0N   26.0E 3.0-4.7 AABAA  Aegean Sea                 

 

NEIC reported an earthquake of M 4.1 in the Dodecanese Islands, Greece was felt with  intensity up to II-III in the area(s) of the Dodecanese Islands, Greece at Lardos.

 

EMSC reported an earthquake of M 2.2 in Los Angeles, California was felt with  intensity up to IV in the area(s) of Los Angeles, California at Sherman Oaks.

 

EMSC reported an earthquake of M 3.6 in Poland was felt with  intensity up to IV in the area(s) of Poland in Gola, Rudna, Lubin, Glogow and Zukowice.

 

 

No Tropical Cyclones are currently active.

 

A moderately strong solar flare occurred at this writing. This flare of M3.2 class occurred near local solar midnight along the west coast of the U.S. and may enhance seismicity in that region in the next day.

This interrupts a strong quiet period of solar flare activity and could

enhance seismicity at local solar noon in the general area at 35 East longitude of eastern Turkey and Iran and at solar midnight near 125 West longitude in the U.S. West Coast.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

XXXX       0813   0821      0845   M3.2      (May 19, 2025)   1.1E-02

 

4190       0506   0520      0538   B8.2      (May 18, 2025)   1.4E-03      

Russia M 4.3 05:52 UT

El Salvador M 4.0 05:52 UT

Jalisco M 4.2 05:10 UT

 

4270       1617   1627      1636   B9.6      (May 18, 2025)   1.2E-03      

New Guinea M 4.0 16:16 UT

 

4280       1636   1642      1645   B8.4      (May 18, 2025)   4.2E-04      

New Guinea M 4.6 16:51 UT

 

4290       1813   1828      1837   C1.0      (May 18, 2025)   1.4E-03  

O'Higgins, Chile M 4.0 18:20 UT

Volcano Is. Japan, M 4.7 18:37 UT

 

4320       2209   2218      2225   B8.2      (May 18, 2025)   3.5E-04      

4330       2303   2318      2333   C1.5      (May 18, 2025)   2.1E-03      

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:   minor storms May 19 active May 20-21.  Solar M-flare chance: 25% X-class: 5% proton storm: 1%

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)    22 40 13 16:00 6   45 119

 

A strong Gamma Ray Burst was recorded by SWIFT on May   16, 2025 at 14:35:29 UT (#250516A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    9, 2025 at 22:33:30 UT (#250509A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the M 6.8 in Macquarie Island region (white stipples).

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05 19 06 22 2025  18.9 -107.4 4.1 OFF COAST OF JALISCO, MEXICO   M133 SG118 T75 D82 MA109 Z102 NG72

05 19 05 59 2025   1.1   97.1 4.7 NIAS REGION, INDONESIA         M20 SG70 T89 D123 MA72 Z76 NG85

05 19 05 56 2025  15.7  -96.5 4.2 OAXACA, MEXICO                 M140 SG120 T84 D76 MA113 Z107 NG76

05 19 05 48 2025 -30.2 -177.2 5.3 KERMADEC ISLANDS, NEW ZEALAND  M98 SG45 T10 D74 MA31 Z22 NG116

05 19 05 41 2025  34.3 -118.4 2.2 GREATER LOS ANGELES AREA, CALI M115 SG127 T75 D100 MA115 Z106 NG56

05 19 04 55 2025  -2.7  126.7 4.0 CERAM SEA, INDONESIA           M38 SG61 T60 D119 MA56 Z55 NG88

05 19 04 16 2025  41.3  142.8 4.3 HOKKAIDO, JAPAN REGION         M43 SG104 T73 D154 MA95 Z91 NG44

05 19 04 13 2025  36.8 -121.4 2.0 CENTRAL CALIFORNIA             M111 SG128 T75 D103 MA115 Z106 NG54

05 19 03 46 2025  51.5   16.2 3.5 POLAND                         M66 SG146 T147 D128 MA155 Z159 NG41

05 19 03 41 2025   7.5  125.8 4.9 MINDANAO, PHILIPPINES          M32 SG71 T65 D129 MA66 Z65 NG78

05 19 03 14 2025  37.2  141.4 4.6 NEAR EAST COAST OF HONSHU,     M41 SG100 T71 D152 MA91 Z87 NG48

05 19 03 03 2025  40.4 -125.1 2.7 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D108 MA116 Z107 NG50

05 19 02 59 2025  34.0 -117.0 2.1 SOUTHERN CALIFORNIA            M116 SG127 T76 D99 MA115 Z107 NG57

05 19 02 45 2025   3.9   95.9 4.2 OFF W COAST OF NORTHERN        M17 SG73 T91 D125 MA75 Z79 NG82

05 19 01 32 2025  16.3  -94.4 4.0 OAXACA, MEXICO                 M140 SG121 T86 D76 MA115 Z108 NG76

05 19 01 30 2025  -7.7  130.0 4.3 KEPULAUAN BABAR, INDONESIA     M44 SG56 T55 D114 MA50 Z50 NG93

05 19 00 23 2025  38.7   23.5 4.5 GREECE                         M63 SG133 T156 D122 MA143 Z150 NG53

05 19 00 11 2025 -16.2 -176.0 4.3 TONGA                          M94 SG58 T4 D86 MA44 Z35 NG102

05 18 23 58 2025 -18.5  -71.3 4.2 OFF COAST OF TARAPACA, CHILE   M167 SG95 T94 D38 MA97 Z96 NG112

05 18 22 56 2025  37.5 -118.8 2.6 CENTRAL CALIFORNIA             M112 SG129 T77 D103 MA117 Z108 NG53

05 18 19 59 2025 -14.2  167.4 4.7 VANUATU                        M78 SG54 T18 D95 MA41 Z33 NG100

05 18 19 15 2025  19.1   93.4 5.1 MYANMAR                        M3 SG88 T98 D139 MA89 Z92 NG68

05 18 18 37 2025  25.5  141.5 4.7 VOLCANO ISLANDS, JAPAN REGION  M41 SG89 T62 D142 MA80 Z76 NG60

05 18 18 20 2025 -34.8  -71.7 4.0 LIBERTADOR O'HIGGINS, CHILE    M163 SG79 T88 D22 MA82 Z83 NG128

05 18 17 56 2025 -10.7   41.4 4.4 COMOROS REGION                 M62 SG82 T133 D91 MA94 Z103 NG101

05 18 17 30 2025  33.7   90.7 4.5 XIZANG-QINGHAI BORDER REGION   M12 SG103 T105 D152 MA103 Z105 NG53

05 18 17 12 2025  14.1  -92.3 4.1 OFFSHORE GUATEMALA             M143 SG120 T87 D73 MA114 Z108 NG78

05 18 16 59 2025  13.9  -92.4 4.2 OFFSHORE GUATEMALA             M143 SG120 T86 D73 MA114 Z108 NG78

05 18 16 51 2025  -6.2  147.6 4.6 EASTERN NEW GUINEA REG., P.N.G M57 SG58 T39 D110 MA48 Z44 NG91

05 18 16 15 2025  -1.9  137.4 4.0 NEAR N COAST OF PAPUA, INDONES M46 SG61 T50 D117 MA54 Z51 NG87

05 18 14 42 2025  10.8  -86.8 4.2 OFF COAST OF COSTA RICA        M147 SG119 T91 D69 MA115 Z110 NG82

05 18 12 33 2025  13.9  -92.5 4.0 OFFSHORE GUATEMALA             M143 SG120 T86 D73 MA114 Z108 NG78

05 18 12 07 2025  18.8  -68.9 4.0 DOMINICAN REPUBLIC             M136 SG132 T109 D75 MA131 Z127 NG75

05 18 10 54 2025  31.7 -104.2 2.0 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 18 10 47 2025  31.5 -116.1 3.3 BAJA CALIFORNIA, MEXICO        M118 SG126 T75 D96 MA114 Z106 NG59

05 18 10 25 2025  45.7   26.8 3.9 ROMANIA                        M60 SG137 T149 D128 MA146 Z151 NG46

05 18 10 03 2025  51.1  105.4 3.8 LAKE BAYKAL REGION, RUSSIA     M29 SG116 T99 D173 MA112 Z111 NG35

05 18 09 55 2025  58.2 -149.3 4.5 GULF OF ALASKA                 M83 SG134 T80 D131 MA120 Z112 NG30

05 18 09 52 2025  17.5  -94.9 4.2 VERACRUZ, MEXICO               M139 SG122 T86 D77 MA115 Z109 NG75

05 18 08 08 2025  31.7 -104.4 2.1 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 18 08 01 2025  31.7 -104.4 2.1 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 18 07 54 2025 -17.7 -174.4 4.9 TONGA                          M96 SG57 T2 D83 MA43 Z34 NG104

05 18 07 29 2025  36.0   28.1 4.1 DODECANESE IS.-TURKEY BORDER R M59 SG129 T155 D122 MA139 Z146 NG55

05 18 07 26 2025  56.2  117.4 4.8 CHITINSKAYA OBLAST', RUSSIA    M37 SG120 T95 D176 MA114 Z111 NG30

05 18 07 26 2025  56.2  117.4 4.7 CHITINSKAYA OBLAST', RUSSIA    M37 SG120 T95 D176 MA114 Z111 NG30

05 18 06 56 2025  38.7   23.5 4.4 GREECE                         M63 SG133 T156 D122 MA143 Z150 NG53

05 18 05 52 2025  56.3  117.3 4.3 CHITINSKAYA OBLAST', RUSSIA    M37 SG120 T95 D176 MA114 Z111 NG29

 

 

COMPARISON OF FORECASTS AND EARTHQUAKES

 

Following are the comparisons of the closest forecast to today's earthquakes and the listing of the earthquakes sorted by latitude. For most events there are two listings. The first line is the observed event starting with "O:" for Observed. There follows the date, month and year, the time in UT hours:minutes:seconds, the latitude and longitude, the given magnitude and the reporting agency followed by the geographic location. The second line starts with "P:" This is the forecast event as forecast in our summaries normally more than a month in advance. Magnitudes may vary in response to updated seismic watches and daily variations due to tidal and other influences. This line has the forecast date, month and year, the forecast number, latitude, longitude and forecast magnitude range.  This is followed by a comparison between the forecast and the event. The comparison includes letters A-D. The first is number of days difference from predicted (A:up to 2, B3-5; C:6-10; D:more than 10), Difference in latitude (A:up to 1 degree; B:1-2 degrees; C:2-4 degrees; D:more than 4 degrees); longitude (same comparison as with latitude); magnitude (A: within forecast range; B: higher than forecast range; C: lower than forecast range; D: no comparison possible). The last letter is a stand in for a future comparison which needs to be done statistically after a large number of forecasts have been made. In previous data, an excellent match is generally AAAAA; a good match as one or two B's; a fair match has several B's and C's and a poor match is one which contains a number of C's or D's. 

 

 

O: 19MAY2025 05:59:29   1.1N   97.1E MB=4.7  EMSC   NIAS REGION, INDONESIA       

P: 15MAY2025 172217     2.0N   99.0E 4.0-5.4 BABAA  So. Sumatera               

 

O: 18MAY2025 16:15:35   1.9S  137.4E ML=4.0  EMSC   NEAR N COAST OF PAPUA, INDONES

P: 16MAY2025 172243     1.0S  137.0E 4.0-5.5 AAAAA  West Irian, PNG            

 

O: 19MAY2025 04:55:53   2.7S  126.7E ML=4.0  EMSC   CERAM SEA, INDONESIA         

P: 13MAY2025 172222     3.0S  127.0E 4.0-5.5 CAAAA  Ceram area                 

 

O: 19MAY2025 02:45:50   3.9N   95.9E ML=4.2  EMSC   OFF W COAST OF NORTHERN      

P: 16MAY2025 172218     5.0N   94.0E 4.0-5.8 BBBAA  Nicobar Islands            

 

O: 18MAY2025 16:51:00   6.2S  147.6E MB=4.6  EMSC   EASTERN NEW GUINEA REG., P.N.G

P: 12MAY2025 172229     7.0S  147.0E 4.0-5.4 CAAAA  New Ireland                

 

O: 19MAY2025 03:41:29   7.5N  125.8E MB=4.9  EMSC   MINDANAO, PHILIPPINES        

P: 18MAY2025 172209     7.0N  124.0E 4.0-5.4 AABAA  Central Philippines        

 

O: 19MAY2025 01:30:05   7.7S  130.0E ML=4.3  EMSC   KEPULAUAN BABAR, INDONESIA   

P: 18MAY2025 172245     6.0S  131.0E 4.0-5.5 ABAAA  West Irian, PNG            

 

O: 18MAY2025 17:56:27  10.7S   41.4E MB=4.4  EMSC   COMOROS REGION               

 

O: 18MAY2025 14:42:40  10.8N   86.8W ML=4.2  EMSC   OFF COAST OF COSTA RICA      

P: 14MAY2025 172248    10.0N   84.0W 3.5-5.3 BACAA  Caribbean Sea               

 

O: 18MAY2025 16:59:24  13.9N   92.4W ML=4.2  EMSC   OFFSHORE GUATEMALA           

O: 18MAY2025 12:33:56  13.9N   92.5W ML=4.0  EMSC   OFFSHORE GUATEMALA           

O: 18MAY2025 17:12:02  14.1N   92.3W ML=4.1  EMSC   OFFSHORE GUATEMALA            

P: 17MAY2025 172250    14.0N   94.0W 3.5-5.2 AABAA  Chiapas, Mexico            

 

O: 18MAY2025 19:59:07  14.2S  167.4E MB=4.7  EMSC   VANUATU                      

P: 19MAY2025 172431    15.0S  168.0E 4.0-5.6 AAAAA  Vanuatu Islands             

 

O: 19MAY2025 05:56:02  15.7N   96.5W ML=4.2  EMSC   OAXACA, MEXICO               

P: 17MAY2025 172265    15.0N   97.0W 3.5-5.3 AAAAA  Oaxaca, Mexico             

 

O: 19MAY2025 00:11:38  16.2S  176.0W MB=4.3  EMSC   TONGA                         

P: 19MAY2025 172430    16.0S  175.0W 4.0-5.5 AAAAA  Tonga Islands              

 

O: 19MAY2025 01:32:15  16.3N   94.4W ML=4.0  EMSC   OAXACA, MEXICO               

O: 18MAY2025 09:52:20  17.5N   94.9W ML=4.2  EMSC   VERACRUZ, MEXICO             

P: 18MAY2025 172251    17.0N   94.0W 3.5-5.3 AAAAA  Chiapas, Mexico            

 

O: 18MAY2025 07:54:39  17.7S  174.4W MB=4.9  EMSC   TONGA                        

P: 19MAY2025 172430    16.0S  175.0W 4.0-5.5 ABAAA  Tonga Islands              

 

O: 18MAY2025 23:58:01  18.5S   71.3W MB=4.2  EMSC   OFF COAST OF TARAPACA, CHILE 

P: 17MAY2025 172428    18.0S   72.0W 4.0-5.6 AAAAA  So. Peru/Bolivia           

 

O: 18MAY2025 12:07:49  18.8N   68.9W MD=4.0  EMSC   DOMINICAN REPUBLIC           

P: 17MAY2025 172274    20.0N   67.0W 3.0-4.4 ABBAA  Bahamas/No. Caribbean      

 

O: 19MAY2025 06:22:11  18.9N  107.4W ML=4.1  EMSC   OFF COAST OF JALISCO, MEXICO 

P: 17MAY2025 172252    18.0N  106.0W 3.5-5.4 AABAA  Coast of Jalisco, Mexico   

 

O: 18MAY2025 19:15:21  19.1N   93.4E MB=5.1  EMSC   MYANMAR                      

P: 19MAY2025 172246    19.0N   92.0E 4.0-5.4 AABAA  Andaman Islands            

 

O: 18MAY2025 18:37:07  25.5N  141.5E MB=4.7  EMSC   VOLCANO ISLANDS, JAPAN REGION

P: 17MAY2025 172276    26.0N  143.0E 4.0-5.4 AABAA  Bonin Islands              

 

O: 19MAY2025 05:48:31  30.2S  177.2W MW=5.3  EMSC   KERMADEC ISLANDS, NEW ZEALAND

P: 17MAY2025 172455    31.0S  177.0W 4.0-5.5 AAAAA  So. Kermadec Islands       

 

O: 18MAY2025 10:47:43  31.5N  116.1W ML=3.3  EMSC   BAJA CALIFORNIA, MEXICO      

P: 17MAY2025 172331    32.0N  116.3W 2.5-4.6 AAAAA  So. California             

 

O: 18MAY2025 08:08:19  31.7N  104.4W ML=2.1  EMSC   WESTERN TEXAS                

O: 18MAY2025 10:54:02  31.7N  104.2W ML=2.0  EMSC   WESTERN TEXAS                

O: 18MAY2025 08:01:43  31.7N  104.4W ML=2.1  EMSC   WESTERN TEXAS                

P: 17MAY2025 172329    32.5N  104.6W 2.0-3.9 AAAAA  SW U.S.A                   

 

O: 18MAY2025 17:30:50  33.7N   90.7E MB=4.5  EMSC   XIZANG-QINGHAI BORDER REGION 

P: 16MAY2025 172349    33.0N   92.0E 3.8-5.2 AAAAA  Xizang                     

 

O: 19MAY2025 02:59:46  34.0N  117.0W ML=2.1  EMSC   SOUTHERN CALIFORNIA          

P: 20MAY2025 172335    34.6N  116.7W 2.5-4.7 AAAAA  So. California             

 

O: 19MAY2025 05:41:48  34.3N  118.4W ML=2.2  EMSC   GREATER LOS ANGELES AREA, CALI

P: 16MAY2025 172334    34.4N  118.6W 2.5-5.0 BAAAA  So. California             

 

O: 18MAY2025 18:20:21  34.8S   71.7W ML=4.0  EMSC   LIBERTADOR O'HIGGINS, CHILE  

P: 15MAY2025 172449    35.0S   71.0W 4.0-5.9 BAAAA  Central Chile              

 

O: 18MAY2025 07:29:53  36.0N   28.1E MB=4.1  EMSC   DODECANESE IS.-TURKEY BORDER R

P: 20MAY2025 172344    38.0N   28.0E 3.5-5.4 ABAAA  Turkey                     

 

O: 19MAY2025 04:13:37  36.8N  121.4W MD=2.0  EMSC   CENTRAL CALIFORNIA           

P: 19MAY2025 172301    36.2N  121.8W 2.5-4.6 AAAAA  Central California         

 

O: 19MAY2025 03:14:40  37.2N  141.4E MB=4.6  EMSC   NEAR EAST COAST OF HONSHU,   

P: 18MAY2025 172325    37.0N  141.0E 4.0-5.4 AAAAA  Off East Coast Honshu      

 

O: 18MAY2025 22:56:38  37.5N  118.8W MD=2.6  EMSC   CENTRAL CALIFORNIA           

P: 18MAY2025 172297    37.9N  118.2W 2.5-4.6 AAAAA  California/Nevada area     

 

O: 19MAY2025 00:23:32  38.7N   23.5E MW=4.5  EMSC   GREECE                       

O: 18MAY2025 06:56:45  38.7N   23.5E MB=4.4  EMSC   GREECE                       

P: 16MAY2025 172293    39.0N   25.0E 3.0-4.7 BAAAA  Aegean Sea                 

P: 18MAY2025 172293    38.0N   26.0E 3.0-4.7 AABAA  Aegean Sea                 

 

O: 19MAY2025 03:03:05  40.4N  125.1W MD=2.7  EMSC   OFFSHORE NORTHERN CALIFORNIA 

P: 17MAY2025 172372    40.2N  124.2W 2.5-4.8 AAAAA  Off Coast of No. Calif     

 

O: 19MAY2025 04:16:12  41.3N  142.8E MB=4.3  EMSC   HOKKAIDO, JAPAN REGION       

P: 19MAY2025 172356    42.0N  145.0E 3.5-5.6 AABAA  Hokkaido, Japan            

 

O: 18MAY2025 10:25:41  45.7N   26.8E ML=3.9  EMSC   ROMANIA                       

P: 13MAY2025 172379    46.0N   26.0E 3.0-5.5 BAAAA  Romania/NW Turkey          

 

O: 18MAY2025 10:03:51  51.1N  105.4E ML=3.8  EMSC   LAKE BAYKAL REGION, RUSSIA   

P: 17MAY2025 172405    56.0N  110.0E 3.0-4.7 ACCAA  So. Siberia                 

 

O: 19MAY2025 03:46:56  51.5N   16.2E ML=3.5  EMSC   POLAND                       

P: 17MAY2025 172400    51.0N   19.0E 3.0-4.9 AABAA  Poland                     

 

O: 18MAY2025 07:26:30  56.2N  117.4E MB=4.7  EMSC   CHITINSKAYA OBLAST', RUSSIA  

P: 16MAY2025 172405    58.0N  121.0E 3.0-4.6 ABBAA  So. Siberia                

P: 20MAY2025 172405    52.0N  116.0E 3.0-4.7 ACAAA  So. Siberia                

 

O: 18MAY2025 09:55:43  58.2N  149.3W MW=4.5  EMSC   GULF OF ALASKA                

P: 14MAY2025 172410    59.0N  150.1W 3.2-5.1 BAAAA  Central Alaska             

 

May 18, 2025

 

Notable earthquakes and events:

 

A pair of earthquakes of M 4.4 and M 4.8 occurred northeast of Lake Baykal, Russia in the the Chitsinitsa Oblast. These are within about 300 km of exact antipodal to the M 7.4 in the Drake Passage (M 7.4 May 2). Antipodal effects probably helped trigger these events.

 

The strongest geomagnetic storm since May 2, 2025 occurred today. AP reached 38 with high latitude A reaching 51. KP reached 6 mid-day and also early on May 18.

The last storm of similar disturbance occurred beginning on May 2, 2025 with AP 39 and

high latitude A of 65. Maximum Kp with that storm reached 7.

Strong geomagnetic storms can help promoted enhanced seismicity at high

latitudes and at nodal distances from the south and north geomagnetic poles

in the first day of the storm. For example the last major earthquake in the

world - an M 7.4 on May 2 in the Drake Passage - coincided with the storm of May 2.

 

A pair of earthquakes of M 4.4 and M 4.8 occurred northeast of Lake Baykal, Russia in the the Chitsinitsa Oblast. These are within about 300 km of exact antipodal to the M 7.4 in the Drak Passage (M 7.4 May 2). Antipodal effects probably helped trigger these events.

According to Russian media these events were felt with intensity up to V in the remote epicentral area.

 

The strongest earthquake in the U.S. or Canada today was an M 4.9 south of the Alaska Peninsula. NEIC reported it was felt with intensity II in Sand Point, Alaska.

Several moderate aftershocks followed in the hours after the mainshock.

 

An M 3.9 also occurred today in the Fox River area of southern Alaska. NEIC reported intensity III in Alaska at Clam Gulch, Homer, Seward and II in the Kenai Peninsula at Anchor Point, Kasilof, Kenai, Moose Pass, and Soldotna.

 

CENTRAL PERU

 

A strong earthquake of M 6.0 occurred in Cenral Peru on the morning of May 17.

NEIC reported it was felt with intensity VI in Ayacucho, Peru with minor damage and intensity VI in Puquio and V in Ica at Santiago, Peru. Intensity IV in Ica was also felt at Subtanjalla and III in Lima and Pisco with II in Cusco.

EMSC reported strong shaking in Ayacucho, Ica, Lircay (for 30 seconds); Jose Luis Bustamante and Rivero, Arequipa, Chocaya, San Isidro, Asia.

This epicenter is located on the geomagnetic equator  and is at 99-100 degrees

from the South Geomagnetic Pole as well as the New Zealand quake of March 25, 2025 (M 6.8) and the

Macquarie Island quake of April 29, 2025 and at 108 degrees from the North Geomagnetic Pole and may have been promoted by

energy associated with those sources. Charged particles entering the earth's

environment  are drawn to the north and South geomagnetic poles disturbing

the solid earth in much the same was as an earthquake. These effects are

often strongest at or near 103 degrees from the poles but can vary by a few degrees when coincidental

distances from similar sources and waveforms can cause constructive energy interference.

 

The last earthquake of hit Peru within about 150 km of today's epicenter with

M>=6.0 was an M 7.4 on June 28, 2024 about 100 km south of today's epicenter.

At the time this summary noted:

 

"A major M 7.2 earthquake occurred today off the west coast of Southern Peru. NEIC reported it was

felt with intensity up to IX in Atiquipa, Peru. EMSC reported strong to damaging

intensity in Southern Peru at Ica, Arequipa, Jose Luis Bustamante y Rivero, Pilcomayo, Villa El Salvador, Chorrilos, Surquillo, San Isidro, Jesus Maria, Magdalena Del Mar, Lima, Independencia, San Martin de Porres, Ventanilla, Alto Hospicio, and possible as far the north as Ecuador.

CENSIS reported intensity VI in Yauca, Caraveli, Arequipa, Peru. At least five were injured in this earthquake according to on-line news sources.

Power and Telephone service was out in some portions of southern Peru.

This is the strongest earthquake within about 250 km of this epicenter

since an M 8.4 on June 23, 2001 - an event closely associated with a total

solar eclipse on June 21, 2001 - and an M 7.7 on November 12, 1996 - the only such regional events

in the past 35 years. The earthquake in Peru today occurred 23 years after

the event of June 23, 2001  and was reviewed in the "HISTORY" section of this

summary on June 23, 2023 (and June 23, 2024) as:

 

"The earthquake killed at least 75 including at least 26 by a tsunami.  Nearly 18,000 homes were destroyed and more than 35,000 damaged in Arequipa, Camana and Tacna while injuring nearly 2700. Besides the 26 killed by the tsunami an additional 64 were missing. Many historic buildings were damaged or destroyed at Arequipa. Landslides blocked many highways. The earthquake followed by several days a total eclipse of the sun in the area. A tsunami was generated with maximum height to 7 meters and inundated up to 1 km inland." (June 23, 2023)

 

Today's earthquake of M 7.2 is the strongest

 

...

 

A strong geomagnetic storm occurred today starting at about 14:00 UT and peaking at about 14:50 UT

The GOES 15 magnetometer registered a change in the field strength beginning at

about 80 NT and ending at about 130 nT (nanoTesla) 15 minutes later as this geomagnetic

storm hit. A strong earthquake of M 6.0 occurred with this storm on the geomagnetic

equator in Southern Peru at 16S 74W. This was an epicenter which this summary

had expected to see a strong earthquake at this time associated with geomagnetic

storms ,,," (June 28, 2024)

 

This earthquake occurred during a moderate solar flare, the second strongest in the past

24 hours. Data for this solar flare from SWPC follow:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

XXXX       0956   1009      1020   B8.5      (May 17, 2025)   1.0E-03  

Peru M 6.0 10:22 UT

Oaxaca M 4.3 10:08 UT

 

 

Forecast 172258 had expected today's event in Peru was likely in mid-May within

about 100 km.

 

O: 17MAY2025 10:22:13 14.8S  74.2W MW=6.0  EMSC   Central Peru              

P: 13MAY2025 172258   16.0S  74.0W 4.0-5.6 BBAAA  So. Peru/Bolivia  

 

 

NEIC reported an earthquake of M 4.4 in Greece was felt with  intensity up to II-III in the area(s) of Greece with II in Attiki at Khalandrion and II in Athens, Palaion Faliron, it was also felt in Korinthos and Volos, Greece with II.

EMSC reported strong shaking in Greece at Kirinthos, Paralia Politikon, Anthidona, Chalkida, Xirovrysi, Atalanti, Oropos, Nea Politeia, Magoula, Ano Liosia, Dimos Kifisias, Acharnes, Kifisia among others.

 

NEIC reported an earthquake of M 4.9 in Lombok, Indonesia was felt with  intensity up to II-III in the area(s) of Lombok, Indonesia in Denpasar, Bali.

EMSC reported moderate shaking in Lombok at Kuta and Pujut and Sandubaya, Cakranegara, Nusa Peninda, Batu Layar, and in Denpasar, Kuta Utara, Gianyar, Kediri, Tampalksiring, Ubud, Amed, Abang, Tegallalang, Bali.

 

NEIC reported an earthquake of M 4.5 in Panama was felt with  intensity up to IV in the area(s) of Panama at Santa Fe Veraguas.

 

NEIC reported an earthquake of M 4.2 in Greece was felt with  intensity up to IV in the area(s) of Greece with IV at Istaiia, Evvoia; III in Attiki at Peristerion and Tauros and II in Eulalon, Xanthi.

 

NEIC reported an earthquake of M 2.5 in Southern Colorado was felt with  intensity up to II-III in the area(s) of Southern Colorado in Trinidad.

 

NEIC reported an earthquake of M 5.2 in Myanmar was felt with  intensity up to II-III in the area(s) of Myanmar with IV in Kyaukse; V in Taungdwingyi, Magway, and V in Maymyo with IV in Mandalay and Sagaing.

EMSC reported moderate shaking in Myanmar at Myittha, Kyaukse, Sintgaing, Mandalay, Chanmyathazi, Thazi, Aungmyaythazan, Pyinoolwin, Kalaw, Taynggyi, Loilem, Mogok, Pobbathiri, Si Phum, Dagon Myothit.

 

 

NEIC reported an earthquake of M 4.6 in Honduras was felt with  intensity up to II-III in the area(s) of Honduras at Yaguacire, Francisco Morazan.

 

NEIC reported an earthquake of M 3.0 in Northern California was felt with  intensity up to II-III in the area(s) of Northern California with III in San Francisco, Kelseyville and II in Middletown.

 

EMSC reported an earthquake of M 4.8 in Mindanao, Philippines was felt with  intensity up to IV in the area(s) of Mindanao, Philippines at Dumaguete City.

PHIVOLCS reported intensity III in City of Dipolog, City of Dapitan, Liloy, Jose Dalman, Manukan, Pres. Manuel A Roxas, Salug, Siayan, Leon T. Postigo, Katipunana dn Sinandangan, Zamboanda del Norte and II in Tampitisan and I in Bonifacio, Misamis Occidental.

 

EMSC reported an earthquake of M 4.0 in Central Turkey was felt with  intensity up to IV in the area(s) of Central Turkey at Gazibeyli, Kicikoy, Germir, Mimarsinan, Mithatpasa.

 

 

No Tropical Cyclones are currently active.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

4120       0956   1009      1019   B8.5      (May 17, 2025)   1.0E-03  

Peru M 6.0 10:22 UT

Oaxaca M 4.3 10:08 UT

 

4130       1351   1406      1419   B9.1      (May 17, 2025)   1.3E-03  

4150       1944   2000      2011   C2.2      (May 17, 2025)   3.1E-03  

Colorado M 2.5 19:52 UT

Gulf of California M 3.4 20:15 UT

 

4170       2311   2336      0006   B9.6      (May 17, 2025)   3.0E-04  

 

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:   minor storms May 18-19 active May 20.  Solar M-flare chance: 35% X-class: 10% proton storm: 5%

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)    38 51 25 16:00 6   58 117

 

A strong Gamma Ray Burst was recorded by SWIFT on May   16, 2025 at 14:35:29 UT (#250516A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    9, 2025 at 22:33:30 UT (#250509A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the M 6.8 in Macquarie Island region (white stipples).

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05 18 08 08 2025  31.7 -104.4 2.1 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 18 08 01 2025  31.7 -104.4 2.3 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 18 07 54 2025 -17.6 -174.5 4.9 TONGA                          M96 SG57 T2 D84 MA43 Z34 NG104

05 18 07 32 2025  19.0  -67.6 3.1 PUERTO RICO REGION             M136 SG132 T111 D75 MA132 Z128 NG74

05 18 07 26 2025  56.2  117.4 4.8 CHITINSKAYA OBLAST', RUSSIA    M37 SG120 T95 D176 MA114 Z111 NG30

05 18 07 26 2025  56.2  117.4 4.7 CHITINSKAYA OBLAST', RUSSIA    M37 SG120 T95 D176 MA114 Z111 NG30

05 18 06 56 2025  38.7   23.5 4.4 GREECE                         M63 SG133 T156 D122 MA143 Z150 NG53

05 18 06 13 2025  36.6   70.9 4.4 HINDU KUSH REGION, AFGHANISTAN M26 SG112 T121 D146 MA115 Z118 NG52

05 18 05 52 2025  56.3  117.3 4.3 CHITINSKAYA OBLAST', RUSSIA    M37 SG120 T95 D176 MA114 Z111 NG29

05 18 05 52 2025  12.9  -88.5 4.0 OFFSHORE EL SALVADOR           M145 SG120 T90 D71 MA115 Z110 NG80

05 18 05 10 2025  19.2 -105.0 4.2 OFFSHORE JALISCO, MEXICO       M134 SG120 T78 D81 MA111 Z104 NG72

05 18 04 53 2025 -10.2  116.1 4.9 SOUTH OF LOMBOK, INDONESIA     M37 SG55 T67 D113 MA53 Z55 NG96

05 18 04 25 2025  34.5 -116.3 2.0 SOUTHERN CALIFORNIA            M116 SG128 T77 D99 MA116 Z108 NG56

05 18 04 15 2025 -20.4 -177.7 4.4 FIJI REGION                    M94 SG53 T3 D83 MA39 Z31 NG107

05 18 03 47 2025 -11.3  118.4 4.9 SOUTH OF SUMBAWA, INDONESIA    M39 SG53 T65 D111 MA51 Z53 NG97

05 18 03 46 2025   8.7  123.2 4.8 MINDANAO, PHILIPPINES          M29 SG72 T68 D131 MA68 Z67 NG77

05 18 03 24 2025 -20.9  -69.0 4.2 TARAPACA, CHILE                M165 SG93 T95 D35 MA96 Z95 NG114

05 18 03 06 2025  43.2   41.5 3.9 GEORGIA (SAK'ART'VELO)         M49 SG129 T142 D134 MA136 Z140 NG47

05 18 02 40 2025 -53.0  -47.3 4.9 SOUTH ATLANTIC OCEAN           M138 SG63 T93 D12 MA71 Z75 NG147

05 18 02 30 2025  31.3 -103.1 2.2 WESTERN TEXAS                  M123 SG131 T85 D92 MA121 Z113 NG60

05 18 02 19 2025  38.8 -122.8 2.5 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05 18 01 42 2025  17.0 -100.1 4.4 GUERRERO, MEXICO               M138 SG120 T81 D78 MA112 Z105 NG75

05 18 01 14 2025  54.4 -158.7 3.7 SOUTH OF ALASKA                M80 SG128 T75 D132 MA114 Z106 NG33

05 18 01 11 2025 -36.9  177.6 4.0 OFF E. COAST OF N. ISLAND, N.Z M96 SG37 T18 D71 MA23 Z14 NG123

05 18 01 05 2025  42.0 -126.4 2.9 OFF COAST OF OREGON            M105 SG130 T75 D109 MA116 Z108 NG48

05 18 01 03 2025  54.4 -158.8 3.9 SOUTH OF ALASKA                M80 SG128 T75 D132 MA114 Z106 NG33

05 18 00 37 2025  -4.2  142.3 4.2 NEW GUINEA, PAPUA NEW GUINEA   M52 SG59 T45 D114 MA50 Z47 NG89

05 18 00 32 2025  43.0  146.5 4.7 KURIL ISLANDS                  M46 SG106 T72 D154 MA97 Z92 NG42

05 18 00 10 2025   9.1  -81.5 4.5 PANAMA                         M148 SG119 T95 D66 MA116 Z112 NG84

05 18 00 05 2025  31.7 -104.4 2.1 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 17 23 52 2025  38.7   23.6 4.2 GREECE                         M63 SG133 T156 D122 MA143 Z150 NG53

05 17 23 34 2025  38.6 -122.7 2.2 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05 17 23 26 2025  31.7 -104.4 2.5 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 17 23 01 2025  18.2  -94.3 4.1 OFFSHORE VERACRUZ, MEXICO      M138 SG123 T86 D77 MA116 Z110 NG74

05 17 22 24 2025  19.1 -155.4 3.1 ISLAND OF HAWAII, HAWAII       M99 SG98 T43 D104 MA84 Z75 NG69

05 17 21 20 2025   2.5   96.0 4.9 SIMEULUE, INDONESIA            M19 SG72 T90 D124 MA74 Z78 NG84

05 17 21 18 2025  43.6 -127.5 3.0 OFF COAST OF OREGON            M103 SG131 T76 D111 MA117 Z108 NG46

05 17 21 11 2025  38.4 -122.7 2.4 NORTHERN CALIFORNIA            M109 SG128 T75 D105 MA116 Z107 NG52

05 17 20 58 2025  18.7  -66.8 3.0 PUERTO RICO REGION             M136 SG132 T111 D75 MA132 Z128 NG75

05 17 20 56 2025 -17.5 -174.3 4.7 TONGA                          M96 SG57 T2 D84 MA43 Z34 NG104

05 17 20 33 2025  31.7 -104.4 2.4 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 17 20 15 2025  30.6 -114.4 3.4 GULF OF CALIFORNIA             M120 SG126 T76 D95 MA114 Z106 NG60

05 17 19 59 2025  31.7 -104.4 2.0 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 17 19 52 2025  37.3 -104.5 2.5 COLORADO                       M117 SG136 T86 D98 MA125 Z116 NG54

05 17 19 05 2025  38.1   36.6 4.0 CENTRAL TURKEY                 M52 SG127 T148 D128 MA135 Z141 NG53

05 17 18 48 2025  36.6 -115.7 2.7 NEVADA                         M114 SG130 T78 D101 MA118 Z109 NG54

05 17 17 41 2025 -59.2  -26.3 4.9 SOUTH SANDWICH ISLANDS REGION  M125 SG56 T96 D22 MA66 Z72 NG153

05 17 15 54 2025  21.4   96.0 5.2 MYANMAR                        M0 SG90 T97 D142 MA90 Z92 NG65

05 17 15 16 2025  33.7 -116.8 2.1 SOUTHERN CALIFORNIA            M116 SG127 T76 D99 MA115 Z107 NG57

05 17 15 09 2025  54.2 -159.9 4.9 SOUTH OF ALASKA                M80 SG127 T75 D133 MA114 Z106 NG34

05 17 14 11 2025  31.3 -103.6 2.0 WESTERN TEXAS                  M123 SG131 T84 D92 MA121 Z113 NG60

05 17 13 31 2025  17.8  -84.2 4.6 NORTH OF HONDURAS              M140 SG126 T95 D75 MA122 Z116 NG75

05 17 12 40 2025  38.8 -122.7 2.8 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05 17 12 19 2025  18.7  -64.3 3.0 VIRGIN ISLANDS REGION          M135 SG133 T114 D75 MA133 Z130 NG75

05 17 11 17 2025  -3.5  152.2 4.4 NEW IRELAND REGION, P.N.G.     M60 SG61 T37 D111 MA50 Z45 NG89

05 17 10 56 2025  36.2   69.4 4.0 HINDU KUSH REGION, AFGHANISTAN M27 SG112 T122 D145 MA116 Z119 NG52

05 17 10 46 2025  59.6 -150.5 4.2 KENAI PENINSULA, ALASKA        M82 SG135 T81 D132 MA121 Z113 NG29

05 17 10 31 2025  16.0  -98.7 4.0 OFFSHORE OAXACA, MEXICO        M139 SG119 T82 D76 MA112 Z105 NG76

05 17 10 22 2025 -14.8  -74.1 6.0 CENTRAL PERU                   M168 SG98 T93 D42 MA99 Z98 NG108

05 17 10 08 2025  16.0  -94.4 4.3 OFFSHORE OAXACA, MEXICO        M140 SG121 T85 D75 MA114 Z108 NG76

05 17 09 40 2025  46.9 -113.2 2.4 WESTERN MONTANA                M106 SG139 T86 D109 MA126 Z118 NG44

05 17 08 01 2025 -35.1 -107.3 5.0 SOUTHERN EAST PACIFIC RISE     M155 SG69 T59 D34 MA66 Z63 NG126

05 17 07 54 2025  36.0  -97.9 2.3 OKLAHOMA                       M120 SG137 T91 D95 MA127 Z120 NG56

05 17 07 31 2025  -8.5  117.1 4.0 SUMBAWA REGION, INDONESIA      M36 SG56 T67 D114 MA54 Z56 NG94

05 17 07 11 2025  17.2  -95.2 4.2 OAXACA, MEXICO                 M139 SG122 T85 D77 MA115 Z109 NG75

 

 

May 17, 2025

 

Notable earthquakes and events:

 

There were no major solar flares today. The X2.7 on May 15 caused radio blackouts throughout areas of Africa and Europe and some communication problems. No CME from this flare is expected to impact earth.

 

The strongest earthquake in the world in the past 24 hours was an M 6.0 in Central Peru.

 

A moderate geomagnetic storm occurred today reaching Kp of 6.3 in the first

three hours of the day. The M 6.0 in Peru at the geomagnetic equator occurred during this storm.

 

A moderate earthquake of M 5.1 occurred today in the Negros area of the Philippines today. It was felt with intensity II-III.

 

A series of light earthquakes is occurring off the coast of Northern California at this writing. The largest of these was an M 3.6 felt in Ferndale and Fortuna, California with intensity II.

This event was preceded by earthquakes of M 2.9, 3.0, 2.5, 2.5 among others.

This sequence began earlier in the day with an M 2.8. That event occurred

about two minutes after a Gamma Ray Burst (GRB) was observed by the SWIFT

array. The data for this GRB is:

 

A strong Gamma Ray Burst (GRB) was recorded by SWIFT on May   16, 2025 at 14:35:29 UT (#250516A).  A preliminary UVOT Magnitude was not assigned to this GRB.

The first of the earthquakes in this series today occurred as an M 2.8 at May 16 at 14:37:25 UT

An earthquake of M 2.3 occurred about a minute after the GRB in Central Turkey (not an aftershock

of recent Turkish activity).

 

NEGROS, PHILIPPINES

 

NEIC reported an earthquake of M 5.1 in Negros, Philippines was felt with  intensity up to II-III in the area(s) of Negros, Philippines with III in Nabitasan, Western Visayas and II in Bacolod, Isabela, San Jose and Tiwi and in Vallehermoso, Central Visayas.

EMSC reported moderate shaking in the Philippines at San Enrique, Talisay City and Cadiz City.

PHIVOLCS reported intensity IV in City of Sipalay, Cauayan, and Candoni, Negros Occidental; III in La Casetlland, City of Silay

City of Bago, Pontevedra, Polopandan, City of Kabankalan, City of Himamaylan and Valladolid, Negros Occidental; City of Bayawan, Negros Oriental and City of Oliolo with lesser shaking in City of Bacolod, Antique, Aklan and Cibu, Philippines.

 

An M 5.1 or greater earthquake last occurred within about 150 km of this epicenter

on August 13, 2022 with M 5.1 but the last of significantly

larger magnitude was an M 6.2 on May 15, 2014 -  11.0 years ago. At the time this summary noted:

 

"The increase in seismicity near the geomagnetic equator noted in this summary

yesterday continued today with strong events of M 6.3 in Northern Mindanao,

Philippines and a second M 6.3 in the Yap Islands of the Caroline Islands in Micronesia to the east of

this. No tsunami was generated by either earthquake. Both events occurred near

the local geomagnetic equator as expected in the current global seismic watch and

within several hours of local solar midnight (They were separated by about 1.5 hours in time).

A Gamma Ray Burst (GRB) was detected by the Swift Satellite Mission midway

between these two earthquakes. A gravity wave associated with this GRB could

have helped promote these two earthquakes.

 

The earthquake in the Philippines was widely felt throughout most of the area of Mindanao and Negros.

Phivolcs reported intensity V in Hinoba-an and Sipalay, Newgro Occidental; IV in Iloilo City; Bago City; Pandan, Antique, Basay, Newgros Occ; Binalbagan, Negros Occ. Bayawan Cityk, Negros Oriental; III in Roxas City, Bais City; La Carlota City; Zamboanga City, Lapulapu City; Cebu City, La Castellana, Negros Occ; Bacolod City; Dumaguete City, Jagna, Bohol; Oton, Iloilo; Tayasan; Jimalalud; Ayungon; and Sibulan, Negros Or.; Dipolog City; Nueva Valencia, Guimaras; Anini-y, Antique, Siquijor Island; Tagbilaran City; II in San Jose, Antique; Sibalom, Antique, Pagadian City; Cagayan de Oro City; Osamis City, San Remegio, Culasi, Sebaste and Tobias Fornier, Antique and I in Masbate City; Kalibo, Aklan; Labason; Polanco and Manukan, Zamboanga del Norte, Philippines.

EMSC reported maximum intensity in DumagueteLa Carlota City, Iloilo City, Minglanilla, Cebu City and Mandaue City, Philippines. There were no immediate reports of damage or casualties.

This is the strongest earthquake to occur within 200 km of this epicenter since

events of M 6.7 on February 6, 2012 and July 11, 2011 of M 6.7 and 6.2 respectively.

The earthquake of 2012 was damaging and deadly in the region and occurred

within two days of the full moon. The quake of July, 2011 occurred three days

before the full moon." (May 15, 2014)

 

This epicenter is near the fifth node (72 degrees) from the Macquarie Islands earthquake of

April 29, 2025 (M 6.8) and from Tonga (M 7.1), New Zealand (March 25); the North Geomagnetic Pole,  and the South Geomagnetic Pole and was probably promoted by constructive energy interference from those sources.

 

Forecast 172258 had expected this activity in central Philippines was likely

around May 14.

 

O: 17MAY2025 00:32:58  9.8N 122.2E MW=5.1  EMSC   Negros, Philippines       

P: 14MAY2025 172258   12.0N 122.0E 3.5-4.9 BBAAA  Luzon, Philippines

 

CENTRAL PERU

 

A strong earthquake of M 6.0 occurred in Cenral Peru on the morning of May 17.

NEIC reported it was felt with intensity VI in Ayacucho, Peru with minor damage and intensity VI in Puquio and V in Ica at Santiago, Peru. Intensity IV in Ica was also felt at Subtanjalla and III in Lima and Pisco.

EMSC reported strong shaking in Ayacucho, Ica, Lircay (for 30 seconds); Jose Luis Bustamante and Rivero, Arequipa, Chocaya, San Isidro, Asia.

This epicenter is located on the geomagnetic equator  and is at 99-100 degrees

from the South Geomagnetic Pole as well as the New Zealand quake of March 25, 2025 (M 6.8) and the

Macquarie Island quake of April 29, 2025 and at 108 degrees from the North Geomagnetic Pole and may have been promoted by

energy associated with those sources. Charged particles entering the earth's

environment  are drawn to the north and South geomagnetic poles disturbing

the solid earth in much the same was as an earthquake. These effects are

often strongest at or near 103 degrees from the poles but can vary by a few degrees when coincidental

distances from similar sources and waveforms can cause constructive energy interference.

 

The last earthquake of hit Peru within about 150 km of today's epicenter with

M>=6.0 was an M 7.4 on June 28, 2024 about 100 km south of today's epicenter.

At the time this summary noted:

 

"A major M 7.2 earthquake occurred today off the west coast of Southern Peru. NEIC reported it was

felt with intensity up to IX in Atiquipa, Peru. EMSC reported strong to damaging

intensity in Southern Peru at Ica, Arequipa, Jose Luis Bustamante y Rivero, Pilcomayo, Villa El Salvador, Chorrilos, Surquillo, San Isidro, Jesus Maria, Magdalena Del Mar, Lima, Independencia, San Martin de Porres, Ventanilla, Alto Hospicio, and possible as far the north as Ecuador.

CENSIS reported intensity VI in Yauca, Caraveli, Arequipa, Peru. At least five were injured in this earthquake according to on-line news sources.

Power and Telephone service was out in some portions of southern Peru.

This is the strongest earthquake within about 250 km of this epicenter

since an M 8.4 on June 23, 2001 - an event closely associated with a total

solar eclipse on June 21, 2001 - and an M 7.7 on November 12, 1996 - the only such regional events

in the past 35 years. The earthquake in Peru today occurred 23 years after

the event of June 23, 2001  and was reviewed in the "HISTORY" section of this

summary on June 23, 2023 (and June 23, 2024) as:

 

"The earthquake killed at least 75 including at least 26 by a tsunami.  Nearly 18,000 homes were destroyed and more than 35,000 damaged in Arequipa, Camana and Tacna while injuring nearly 2700. Besides the 26 killed by the tsunami an additional 64 were missing. Many historic buildings were damaged or destroyed at Arequipa. Landslides blocked many highways. The earthquake followed by several days a total eclipse of the sun in the area. A tsunami was generated with maximum height to 7 meters and inundated up to 1 km inland." (June 23, 2023)

 

Today's earthquake of M 7.2 is the strongest

 

...

 

A strong geomagnetic storm occurred today starting at about 14:00 UT and peaking at about 14:50 UT

The GOES 15 magnetometer registered a change in the field strength beginning at

about 80 NT and ending at about 130 nT (nanoTesla) 15 minutes later as this geomagnetic

storm hit. A strong earthquake of M 6.0 occurred with this storm on the geomagnetic

equator in Southern Peru at 16S 74W. This was an epicenter which this summary

had expected to see a strong earthquake at this time associated with geomagnetic

storms ,,," (June 28, 2024)

 

This earthquake occurred during a moderate solar flare, the second strongest in the past

24 hours. Data for this solar flare from SWPC follow:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

XXXX       0956   1009      1020   B8.5      (May 17, 2025)   1.0E-03  

Peru M 6.0 10:22 UT

Oaxaca M 4.3 10:08 UT

 

 

Forecast 172258 had expected today's event in Peru was likely in mid-May within

about 100 km.

 

O: 17MAY2025 10:22:13 14.8S  74.2W MW=6.0  EMSC   Central Peru              

P: 13MAY2025 172258   16.0S  74.0W 4.0-5.6 BBAAA  So. Peru/Bolivia  

 

NEIC reported an earthquake of M 3.8 in Southern Nevada was felt with  intensity up to II-III in the area(s) of Southern Nevada with III in Henderson and Mesquite and Overton and II in Las Vegas with lesser shaking in Saint George, Utah.

 

NEIC reported an earthquake of M 4.0 in Puerto Rico was felt with  intensity up to II-III in the area(s) of Puerto Rico at Aguada and Ponce.

 

NEIC reported an earthquake of M 3.0 in Southern Alaska was felt with  intensity up to II-III in the area(s) of Southern Alaska at Valdez.

 

NEIC reported an earthquake of M 3.7 in Central Alaska was felt with  intensity up to II-III in the area(s) of Central Alaska in Willow.

 

NEIC reported an earthquake of M 3.4 in Kodiak Island, Alaska was felt with  intensity up to II-III in the area(s) of Kodiak Island, Alaska with III in Kodiak.

 

NEIC reported an earthquake of M 2.7 in Northern Utah was felt with  intensity up to II-III in the area(s) of Northern Utah at Portage.

 

NEIC reported an earthquake of M 2.7 in Western Texas was felt with  intensity up to II-III in the area(s) of Western Texas with II in El Paso.

 

NEIC reported an earthquake of M 2.5 in Utah was felt with  intensity up to II-III in the area(s) of Utah at Henderson Nevada.

 

NEIC reported an earthquake of M 2.4 in Northern Kansas was felt with  intensity up to II-III in the area(s) of Northern Kansas.

This epicenter is located at 101 degrees from the M 7.4 in the Drake Passage of May 2 and may

have been promoted by energy from that source. Other earthquakes at this

distance from the Drake Passage today occurred in southern Nevand and Utah (M 3.8, 2.5);

Central California.

 

EMSC reported an earthquake of M 4.2 in Romania was felt with  intensity up to IV in the area(s) of Romania in Bucharest and II in Chisinau, Moldova.

 

 

No Tropical Cyclones are currently active.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

XXXX       0956   1009      1020   B8.5      (May 17, 2025)   1.0E-03  

Peru M 6.0 10:22 UT

Oaxaca M 4.3 10:08 UT

 

 

3800       0044   0052      0055   C3.4      (May 16, 2025)   1.4E-03  

Tanzania M 4.7 00:53 UT

 

3830       0310   0315      0329   C1.7      (May 16, 2025)   1.5E-03  

3840       0348   0403      0415   C2.3      (May 16, 2025)   3.9E-04  

Vietnam M 4.5 04:17 UT

 

3850       0527   0539      0547   C1.0      (May 16, 2025)   1.1E-03  

Kermadec Is. M 4.9 05:34 UT

 

3920       1027   1032      1038   C1.3      (May 16, 2025)   8.0E-04  

Guerrero M 3.4 10:28 UT

Baja California M 3.3 10:26 UT

 

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:  active May 17 minor storms May 18-19.  Solar M-flare chance: 60% X-class: 20% proton storm: 5%

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)    13 24 11 09:00 5   57 117

 

A strong Gamma Ray Burst was recorded by SWIFT on May   16, 2025 at 14:35:29 UT (#250516A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    9, 2025 at 22:33:30 UT (#250509A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the M 6.8 in Macquarie Island region (white stipples).

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05 17 10 22 2025 -14.8  -74.2 6.0 CENTRAL PERU                   M168 SG98 T93 D42 MA99 Z98 NG108

05 17 10 08 2025  15.6  -95.0 4.3 OFFSHORE OAXACA, MEXICO        M141 SG120 T85 D75 MA114 Z108 NG77

05 17 09 41 2025 -11.4  118.2 4.4 SOUTH OF SUMBAWA, INDONESIA    M39 SG53 T65 D111 MA51 Z53 NG97

05 17 08 01 2025 -35.2 -107.3 5.0 SOUTHERN EAST PACIFIC RISE     M155 SG69 T59 D34 MA66 Z63 NG126

05 17 07 54 2025  36.0  -97.9 2.3 OKLAHOMA                       M120 SG137 T91 D95 MA127 Z120 NG56

05 17 07 31 2025  -8.5  117.1 4.0 SUMBAWA REGION, INDONESIA      M36 SG56 T67 D114 MA54 Z56 NG94

05 17 07 11 2025  17.2  -95.2 4.2 OAXACA, MEXICO                 M139 SG122 T85 D77 MA115 Z109 NG75

05 17 06 51 2025   9.8  122.0 4.2 NEGROS, PHILIPPINES            M27 SG74 T69 D132 MA69 Z69 NG76

05 17 06 11 2025 -51.4  -72.2 4.0 SANTA CRUZ, ARGENTINA          M149 SG63 T81 D5 MA67 Z69 NG144

05 17 05 54 2025  36.5 -114.1 3.8 NEVADA                         M115 SG131 T79 D100 MA119 Z110 NG55

05 17 05 52 2025  12.9  -88.5 4.1 OFFSHORE EL SALVADOR           M145 SG120 T90 D71 MA115 Z110 NG80

05 17 05 51 2025  40.3 -124.7 3.3 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05 17 05 40 2025 -23.5  179.9 4.8 SOUTH OF FIJI ISLANDS          M93 SG49 T6 D81 MA35 Z27 NG110

05 17 05 21 2025  40.3 -124.9 2.6 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05 17 05 06 2025  40.3 -124.6 2.9 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05 17 04 44 2025  40.3 -124.7 2.5 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05 17 04 36 2025  40.3 -124.7 2.5 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05 17 04 34 2025  31.7 -104.4 3.4 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 17 04 11 2025  39.8  -99.1 2.4 KANSAS                         M116 SG140 T91 D99 MA129 Z121 NG52

05 17 03 53 2025  40.3 -124.9 2.3 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05 17 03 39 2025  40.4 -125.0 2.8 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D108 MA116 Z107 NG50

05 17 03 24 2025  19.3  -67.2 4.0 PUERTO RICO REGION             M135 SG133 T111 D75 MA132 Z129 NG74

05 17 03 23 2025   9.9  122.0 4.1 NEGROS, PHILIPPINES            M27 SG74 T69 D132 MA69 Z69 NG76

05 17 01 11 2025 -57.1  -67.6 4.5 DRAKE PASSAGE                  M142 SG58 T81 D0 MA63 Z66 NG150

05 17 00 45 2025  -3.5  145.4 5.1 NEAR N COAST OF NEW GUINEA, PN M54 SG60 T43 D114 MA51 Z47 NG89

05 17 00 32 2025   9.8  122.2 5.1 NEGROS, PHILIPPINES            M27 SG74 T69 D132 MA69 Z69 NG76

05 16 23 37 2025  61.4 -146.6 3.0 SOUTHERN ALASKA                M83 SG137 T84 D132 MA124 Z115 NG27

05 16 23 14 2025   1.0   93.2 4.4 OFF W COAST OF NORTHERN        M21 SG71 T93 D122 MA74 Z78 NG86

05 16 22 14 2025  63.1 -151.5 3.7 CENTRAL ALASKA                 M80 SG137 T84 D135 MA124 Z116 NG25

05 16 21 59 2025  45.6   26.5 4.2 ROMANIA                        M60 SG137 T149 D128 MA146 Z151 NG46

05 16 21 48 2025  -9.1  125.7 4.4 EAST TIMOR REGION              M42 SG55 T59 D113 MA50 Z51 NG94

05 16 21 40 2025  44.6 -114.3 2.0 SOUTHERN IDAHO                 M108 SG137 T84 D108 MA124 Z116 NG46

05 16 21 26 2025 -56.9  -67.5 3.4 DRAKE PASSAGE                  M143 SG58 T81 D0 MA63 Z66 NG150

05 16 20 36 2025  31.7 -104.4 2.6 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 16 20 09 2025  18.1  119.9 4.2 PHILIPPINE ISLANDS REGION      M22 SG82 T75 D140 MA78 Z77 NG67

05 16 20 07 2025  40.3 -124.8 2.0 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05 16 19 48 2025  33.0 -116.7 2.1 SOUTHERN CALIFORNIA            M117 SG127 T76 D98 MA115 Z106 NG58

05 16 19 43 2025  57.7 -152.5 3.4 KODIAK ISLAND REGION, ALASKA   M82 SG133 T79 D132 MA119 Z111 NG31

05 16 19 25 2025  -4.7  153.0 4.6 NEW IRELAND REGION, P.N.G.     M61 SG60 T35 D110 MA49 Z44 NG90

05 16 19 15 2025 -35.8 -105.6 4.9 SOUTHERN EAST PACIFIC RISE     M156 SG69 T61 D32 MA66 Z63 NG127

05 16 19 11 2025  35.1 -119.1 2.0 CENTRAL CALIFORNIA             M114 SG127 T75 D101 MA115 Z106 NG56

05 16 19 01 2025  35.8 -118.4 2.0 CENTRAL CALIFORNIA             M113 SG128 T76 D101 MA116 Z107 NG55

05 16 18 32 2025  63.7  -23.4 3.6 ICELAND REGION                 M82 SG170 T132 D124 MA170 Z163 NG30

05 16 18 09 2025  50.6 -130.3 3.0 VANCOUVER ISLAND, CANADA REGIO M97 SG135 T80 D118 MA121 Z112 NG39

05 16 17 00 2025  30.5 -114.3 3.7 GULF OF CALIFORNIA             M120 SG125 T76 D95 MA114 Z106 NG60

05 16 16 44 2025  33.7 -116.7 2.2 SOUTHERN CALIFORNIA            M116 SG127 T76 D99 MA115 Z107 NG57

05 16 16 13 2025  31.7 -104.4 2.9 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 16 16 12 2025  35.6 -117.6 2.1 SOUTHERN CALIFORNIA            M114 SG128 T77 D101 MA116 Z108 NG55

05 16 16 11 2025  52.0 -171.2 3.8 FOX ISLANDS, ALEUTIAN ISLANDS  M74 SG122 T72 D137 MA109 Z101 NG35

05 16 14 37 2025  40.3 -124.7 2.8 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05 16 14 26 2025  64.6 -140.2 3.1 SOUTHERN YUKON TERRITORY, CANA M83 SG142 T88 D132 MA128 Z120 NG25

05 16 13 40 2025  39.2 -119.0 2.1 NEVADA                         M110 SG131 T78 D104 MA118 Z109 NG51

05 16 13 15 2025  42.8  144.6 4.2 HOKKAIDO, JAPAN REGION         M45 SG106 T73 D154 MA97 Z92 NG43

05 16 12 12 2025  38.8 -122.7 2.5 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05 16 11 30 2025  16.8  -95.2 4.1 OAXACA, MEXICO                 M139 SG121 T85 D76 MA115 Z108 NG75

05 16 10 25 2025  31.5 -115.7 3.3 BAJA CALIFORNIA, MEXICO        M118 SG126 T75 D96 MA114 Z106 NG59

05 16 09 21 2025 -10.0  -74.8 4.0 CENTRAL PERU                   M165 SG102 T94 D46 MA103 Z101 NG103

05 16 07 56 2025  17.6  -62.0 3.7 ANTIGUA AND BARBUDA REGION     M135 SG132 T115 D74 MA133 Z131 NG76

05 16 07 11 2025  36.5 -114.0 2.5 ARIZONA                        M115 SG131 T79 D100 MA119 Z110 NG55

 

 

May 16, 2025

 

Notable earthquakes and events:

 

An M 4.5 earthquake occurred in Vietnam today and was felt in Ha Dong Song Hong and in Dien Bien Mien Nui Va Trung Du, Vietnam.

 

An earthquake of M 4.7 also occurred in Tanzania today. It was felt with intensity up to V in Tanzania.

 

An unusual earthquake of M 5.0 was felt south of Ankara, Turkey today. It was felt with intensity up to VI in the epicentral area of Central Turkey.

 

An M 2.8 shook regions of the San Francisco Bay. California today and was felt with intensity II-III in the epicentral area.

 

VIETNAM

 

An M 4.5 earthquake occurred in Vietnam today and was felt in Ha Dong Song Hong and in Dien Bien Mien Nui Va Trung Du, Vietnam.

 

The last earthquake in Vietnam within about 150 km of today's epicenter

occurred on March 14, 2022 with M 4.5. Few earthquakes in Vietnam exceed

M>=5. A significantly larger event hit the region on December 30, 2010 with M 4.7.

At the time this summary noted:

 

 

"Xinhua reported the earthquake in Laos occurred in the northern Mountainous

region and was locally recorded with M 5.5. It was not strongly felt

in this remote region and was followed by an M 4.0 aftershock a few

hours later.  The Vietnam News Agency did not have any immediate reports of

damage or casualties from this event. The event in Laos is the strongest in that general region since events of M 4.9

on Feb. 19, 2001 and of M 4.8 on September 28, 1996." (December 30, 2010)

 

Today's earthquake in Vietnam occurred near local solar noon and may have

been promoted by tidal or geomagnetic stresses which often maximize near this hour.

 

 

This earthquake is located near 144 degrees from the M 7.4 in the Drake Passage

of May 2 and may have been promoted by energy from that source. Other events

at this distance from the Drake Passage epicenter occurred today in Myanmar (M 4.6),

and southeastern China (M 3.9) and in Hindu Kush, Afghanistan (M 4.7).

 

O: 16MAY2025 04:17:21 21.8N 103.1E MW=4.5  EMSC   Vietnam                   

 

TANZANIA

 

An earthquake of M 4.7 also occurred in Tanzania today. It was felt with intensity up to V in Tanzania with V in Mbeya at Vwawa and IV in Mbeya and III in Zanzibat and Pemba, Tanzania.

This event occurred near local solar midnight and may have been promoted by

tidal and/or geomagnetic effects which often maximize near this hour.

 

The last earthquake of M>=4.7 in Tanzania within about 200 km of today's epicenter

was an M 4.7 on October 15, 2021. The largest event in the area in the past 15 years was an

M 5.5  on March 21, 2019. At the time this summary noted:

 

 

"The largest earthquake in the world today was an M 5.5 in the area of Tanzania, Africa.

NEIC reported maximum intensity V in Libala, northern Zambia and IV in Tanzania at Laela Rukwa, Mbeya, Kiwira, Tanzania and II-III in Tanzania in Makungu, Chimala, and Sumbawanga Rukwa; in Zambia at Mungwi and at Mzuzu, Malawi and Kigali Ville de Kigali, Rwanda.

This earthquake occurred near the time of the full moon and was probably promoted

by tidal stresses. This event occurred within about an hour of local solar noon

a time when tidal stresses maximize in the earth. The last earthquake of M>=5.5

within about 200 km of this epicenter occurred as an M 5.5 on February 20, 2002

aslso with M 5.5. An M 6.5 hit the area on October 2, 2000. The last event within

about 250 km of today's epicenter was an M 5.9 in Malayi on February 24, 2017 about 250

km to the southwest and prior to that an M 5.5 on November 14, 2009 about 250 km to the northwest." (March 21, 2019)

 

This epicenter is near 101 degrees from the M 6.8 in Macquarie Island and

at the fourth node (90 degrees) from the Drake Passage and may have been promoted by energy from those sources.

Other earthquakes today at this distance from th Drake Passage occurred in

the Gulf of California (M 3.4) and Myanmar (M 3.9).

 

This earthquake occurred at the maximum of solar flare 3800 of C3.4 class, the

strongest in the past 24 hours. It was likely promoted by energy from this flare

as it occurred near local solar midnight. Data from thie flare from SWPC follow:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

3800       0044   0052      0055   C3.4      (May 16, 2025)   1.4E-03  

Tanzania M 4.7 00:53 UT

Myanmar M 4.601:00 UT

 

Forecast 172226 had expected today's activity in Tanzania was likely around

May 16 to the northwest of today's epicenter in the area of Lake Victoria.

 

O: 16MAY2025 00:53:22  8.8S  33.2E MW=4.7  EMSC   Tanzania                  

P: 16MAY2025 172226    6.0S  30.0E 3.0-4.5 BAAAA  Lake Victoria area

 

CENTRAL TURKEY

 

An unusual earthquake of M 5.0 was felt south of Ankara, Turkey today. It was felt with intensity up to VI in the epicentral area of Central Turkey at Kulu, Konya; III in Ankara at Akyurt, Ankara, Kazan, Incesu, Samsun and in Thira,Kiklades, Greece, Iraq. and II in Israel.

EMSC reported it was felt with moderate intensity in Turkey in Istiklal, Ahievran, Karaoglan, Fabrikalar, Bahcelievler, Calilioz, Gaziosmanpasa, Yenisehit, Taspinar, Kadioglu, Ilkbahar, Oran, Yukari Dikmen anong other and as far as 500 km from the epicenter in Gulluk, Turkey, Cyprus, Syria.

This is the strongest earhtquake in Central Turkey within about 150 km of this

epicenter since an M 5.2 on February 25, 2023. The last event in this region with

significantly larger magnitude than today's M 5.0 occurred as an M 5.7 on December 20, 2007 with

and aftershock of M 5.6 on December 26, 2007. At the time of the last earthquakes

of M>=5 in this area this summary noted:

 

"An M 5.2-5.5 shook areas of central Turkey near Konya today. NEIC reported it was felt with intensity VI in Nigde and IV in Eregli, Konya and Aksaray with lesser shaking in Icel at Mersin, Tarsus, Erdemli.

This earthquake occurred about 200 km north of the M 7.8 of February 6, 2023

and is not part of the classical aftershock pattern following that event. Instead

it appears to be a separate epicenter possibly related to those major earthquakes

in early February through stress re-distribution along the Anatolian Fault.

The M 5.2 today occurred within minutes of locate solar noon and may have

been promoted by high tidal stresses which maximize near this hour." (February 25, 2023)

 

Forecast 172220 had expected this event was likely within about 25 km of this epicenter

in mid-May.

 

O: 15MAY2025 12:46:36 39.0N  33.2E MW=5.0  EMSC   Central Turkey            

P: 09MAY2025 172220   39.0N  33.0E 3.5-4.9 CAAAA  Turkey     

 

An M 2.8 shook regions of the San Francisco Bay. California today and was felt with intensity II-III in the epicentral area. NEIC reported intensity III in Alameda, Alamo, Danville, Lafayette, Moraga, Orinda, Dublin, San Ramon, Walnut Creek, Oakland, with II at Irvine, San Carlos, Alameda, Pleasant hill, Castro Valley, San Leandro, San Ramon, Walnut Creek, Elverta and Roseville.

EMSC reported light to moderate shaking in Central California at Oakland, Danville, Walnut Creek, and San Francisco.

EMSC reported a foreshock of M 2.4 was felt with moderate shaking at Oakland, California.

 

 

NEIC reported an earthquake of M 3.1 in Southern Idaho was felt with  intensity up to II-III in the area(s) of Southern Idaho at Hagerman.

 

NEIC reported an earthquake of M 3.6 in Central Kansas was felt with  intensity up to II-III in the area(s) of Central Kansas with IV in Americus, Herington, Hope; III in Kansas City, Overland Park, Chanute, Council Grove, White Sity, Wilsey, Hillsboro, Ramona, Kansas City and II in Topeka, Andover, Wichita and McPherson.

EMSC reported moderate shaking and loud rumble at Herington, Kansas.

 

NEIC reported an earthquake of M 4.0 in Puerto Rico was felt with  intensity up to II-III in the area(s) of Puerto Rico at Caguas and Guaynabo.

 

This earthquake in Puerto Rico was at sub-solar conditions when it occurred.

That is, it occurred when the sun was directly overhead at local solar noon.

As it occurred within minues of local solar noon and with the strongest

solar flare of the day (M2.1 #3690) it is likely to have been promoted by

SFE from this flare.

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

3690       1708   1721      1727   M2.1      (May 15, 2025)   1.3E-02  

Puerto Rico M 4.0 17:09 UT

 

NEIC reported an earthquake of M 5.0 in Hokkaido, Japan was felt with  intensity up to II-III in the area(s) of Hokkaido, Japan with II at Furano.

 

NEIC reported an earthquake of M 2.5  in Southeastern Missouri was felt with  intensity up to II-III in the area(s) of Southeastern Missouri with II in Sikeston and Saint Louis and in Paducah, Kentucky.

 

NEIC reported an earthquake of M 3.0 in Northern Hawaii was felt with  intensity up to II-III in the area(s) of Northern Hawaii with III in Kamuela and II in Honokaa.

EMSC reported this quake was accompanied by a loud rumble for about 20 seconds at Ahualoa and Honokaa, Hawaii.

 

NEIC reported earthquake of M 3.8 and M 3.5  in northern Nevada were felt with  intensity up to II-III in the area(s) of northern Nevada with II in Winnemucca.

These events are at the third node (120 degrees) from the Macquarie Is. quake of

M 6.8 of April 29 and may have been promoted by energy from that source.

Other earthquakes at this distance from Macquarie Is. today included continuing

series in west Texas, and an M 2.9 in southern Nevada and an M 2.9 in Vancouver, BC.

The events in Nevada area also at 106 degrees from the Drake Passage

Other events at this distance from the Drake Passage today occurred in southern Nevada and Utah and central

and northern California, in San Francisco, CA, (M 2.3, 2.8); Hawaii (M 3.0);

 

 

No Tropical Cyclones are currently active.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

3550       0300   0306      0308   C1.0      (May 15, 2025)   4.3E-04      

3560       0338   0346      0348   C1.3      (May 15, 2025)   5.8E-04  

Southern Idaho M 3.1 03:45 UT

 

3640       1332   1339      1347   C1.0      (May 15, 2025)   8.4E-04  

Algeria M 3.4 13:36 UT

 

3650       1438   1444      1454   C1.2      (May 15, 2025)   3.5E-04  

Iran M 4.0 14:41 UT

 

3730       1454   1458      1500   C1.2      (May 15, 2025)   6.3E-04  

3660       1517   1527      1537   C3.6      (May 15, 2025)   3.2E-03  

Pacific-Antarctic Ridge M 4.9 15:29 UT

 

3690       1708   1721      1727   M2.1      (May 15, 2025)   1.3E-02  

Puerto Rico M 4.0 17:09 UT

 

3700       1947   1953      1959   C1.1      (May 15, 2025)   7.9E-04      

South Sandwich Islands M 5.0 19:47 UT

 

3720       2127   2136      2140   C1.2      (May 15, 2025)   7.1E-04  

Kansas M 3.6 21:33 UT

 

3750       2211   2219      2221   C9.6      (May 15, 2025)   2.3E-03  

Baja California M 3.6 22:20 UT

 

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:  active 17 quiet May 16 minor storms 18.  Solar M-flare chance: 70% X-class: 20% proton storm: 5%

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)    13 22 15 11:00 4   46 119

 

A strong Gamma Ray Burst was recorded by SWIFT on May    9, 2025 at 22:33:30 UT (#250509A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the M 6.8 in Macquarie Island region (white stipples).

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05 16 10 25 2025  31.5 -115.7 3.3 BAJA CALIFORNIA, MEXICO        M118 SG126 T75 D96 MA114 Z106 NG59

05 16 09 21 2025 -10.0  -74.8 4.0 CENTRAL PERU                   M165 SG102 T94 D46 MA103 Z101 NG103

05 16 07 56 2025  17.6  -62.0 3.7 ANTIGUA AND BARBUDA REGION     M135 SG132 T115 D74 MA133 Z131 NG76

05 16 07 43 2025  -5.5  -80.0 3.9 NEAR COAST OF NORTHERN PERU    M163 SG106 T91 D52 MA104 Z102 NG98

05 16 07 11 2025  36.5 -114.0 2.5 ARIZONA                        M115 SG131 T79 D100 MA119 Z110 NG55

05 16 06 37 2025  38.6 -122.8 2.3 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05 16 06 04 2025  44.7 -111.0 2.1 YELLOWSTONE NAT. PARK, WYOMING M109 SG139 T86 D107 MA126 Z118 NG47

05 16 05 34 2025 -30.5 -178.0 4.9 KERMADEC ISLANDS, NEW ZEALAND  M97 SG44 T10 D74 MA30 Z21 NG117

05 16 05 17 2025 -34.9 -111.0 4.7 SOUTHERN EAST PACIFIC RISE     M153 SG68 T56 D36 MA64 Z61 NG126

05 16 04 17 2025  21.8  103.1 4.5 VIETNAM                        M6 SG88 T91 D144 MA87 Z88 NG64

05 16 03 02 2025  27.6  139.9 4.3 BONIN ISLANDS, JAPAN REGION    M40 SG91 T65 D144 MA82 Z78 NG58

05 16 02 33 2025  44.4 -115.2 3.2 SOUTHERN IDAHO                 M108 SG137 T83 D108 MA124 Z115 NG47

05 16 01 50 2025  38.8 -122.8 2.2 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05 16 01 36 2025  54.2   -2.2 2.5 ENGLAND, UNITED KINGDOM        M77 SG156 T145 D122 MA166 Z169 NG39

05 16 01 23 2025  40.4 -126.1 3.1 OFF COAST OF NORTHERN CALIFORN M106 SG129 T74 D108 MA115 Z107 NG50

05 16 01 19 2025  50.7 -130.4 2.8 VANCOUVER ISLAND, CANADA REGIO M96 SG135 T80 D118 MA121 Z113 NG39

05 16 01 10 2025  37.8 -122.1 2.8 SAN FRANCISCO BAY AREA, CALIF. M110 SG128 T75 D104 MA115 Z107 NG53

05 16 01 00 2025  25.2   98.2 4.6 MYANMAR-CHINA BORDER REGION    M3 SG93 T96 D146 MA92 Z94 NG61

05 16 00 53 2025  -8.8   33.3 4.7 TANZANIA                       M68 SG87 T140 D88 MA100 Z109 NG99

05 16 00 12 2025  42.6   79.9 4.2 EASTERN KAZAKHSTAN             M24 SG114 T115 D155 MA115 Z117 NG45

05 15 23 43 2025  15.7  -96.6 4.6 OAXACA, MEXICO                 M140 SG120 T83 D76 MA113 Z107 NG76

05 15 23 08 2025  31.7 -104.5 2.1 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05 15 22 34 2025  39.1 -119.0 2.1 NEVADA                         M111 SG131 T78 D104 MA118 Z109 NG52

05 15 22 20 2025  31.8 -116.8 3.6 OFFSHORE BAJA CALIFORNIA, MEXI M118 SG125 T75 D97 MA114 Z105 NG59

05 15 22 05 2025  38.7 -117.2 2.1 NEVADA                         M112 SG131 T79 D103 MA119 Z110 NG52

05 15 21 33 2025  38.7  -97.0 3.6 KANSAS                         M118 SG140 T92 D98 MA130 Z122 NG53

05 15 20 58 2025  35.3 -117.8 2.5 SOUTHERN CALIFORNIA            M114 SG128 T76 D100 MA116 Z107 NG55

05 15 20 56 2025  27.4 -111.3 3.5 GULF OF CALIFORNIA             M124 SG124 T76 D91 MA113 Z105 NG64

05 15 20 03 2025  31.7 -104.3 2.1 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 15 19 47 2025 -55.9  -27.8 5.0 SOUTH SANDWICH ISLANDS REGION  M126 SG59 T98 D22 MA70 Z75 NG149

05 15 19 17 2025  36.4   70.8 4.7 HINDU KUSH REGION, AFGHANISTAN M26 SG111 T121 D145 MA115 Z118 NG52

05 15 19 16 2025   0.5  121.7 4.6 MINAHASA, SULAWESI, INDONESIA  M32 SG64 T66 D123 MA61 Z61 NG85

05 15 18 04 2025  36.6 -114.8 2.2 NEVADA                         M114 SG130 T79 D101 MA118 Z110 NG54

05 15 17 54 2025  31.0 -115.5 4.1 BAJA CALIFORNIA, MEXICO        M119 SG125 T75 D96 MA114 Z106 NG60

05 15 17 09 2025  19.5  -65.3 4.0 PUERTO RICO REGION             M134 SG133 T113 D76 MA133 Z130 NG74

05 15 17 01 2025  57.1 -157.6 3.3 ALASKA PENINSULA               M80 SG131 T78 D134 MA117 Z109 NG31

05 15 16 31 2025  12.0  125.4 4.1 SAMAR, PHILIPPINES             M29 SG75 T67 D134 MA70 Z69 NG73

05 15 15 29 2025 -54.5 -135.5 4.9 PACIFIC-ANTARCTIC RIDGE        M129 SG43 T44 D36 MA38 Z36 NG143

05 15 15 18 2025  38.8 -122.8 2.3 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05 15 14 41 2025  26.8   58.8 4.0 SOUTHEASTERN IRAN              M34 SG107 T131 D132 MA114 Z120 NG62

05 15 14 01 2025  -1.1  122.1 4.5 SULAWESI, INDONESIA            M34 SG63 T65 D121 MA59 Z59 NG86

05 15 13 15 2025  17.6  -95.2 4.0 VERACRUZ, MEXICO               M139 SG122 T85 D77 MA115 Z109 NG75

05 15 13 05 2025  42.8  143.3 5.0 HOKKAIDO, JAPAN REGION         M44 SG106 T74 D155 MA97 Z92 NG43

05 15 13 03 2025  -4.9  -80.8 4.0 PERU-ECUADOR BORDER REGION     M162 SG106 T91 D52 MA105 Z102 NG98

05 15 12 59 2025 -55.2 -135.7 5.0 PACIFIC-ANTARCTIC RIDGE        M129 SG42 T45 D36 MA38 Z36 NG144

05 15 12 51 2025  12.6  142.3 4.7 MARIANA ISLANDS REGION         M45 SG76 T54 D130 MA67 Z63 NG73

05 15 12 46 2025  39.1   33.3 5.0 CENTRAL TURKEY                 M55 SG129 T150 D127 MA138 Z144 NG52

05 15 12 29 2025  41.1 -116.8 3.0 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

05 15 12 03 2025  37.8 -122.1 2.3 SAN FRANCISCO BAY AREA, CALIF. M110 SG128 T75 D104 MA115 Z107 NG53

05 15 12 03 2025  31.7 -104.4 2.5 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 15 11 35 2025  36.5  -89.6 2.5 SOUTHEASTERN MISSOURI          M121 SG141 T97 D94 MA133 Z125 NG56

05 15 11 00 2025  43.8  100.0 3.7 CENTRAL MONGOLIA               M22 SG110 T101 D164 MA108 Z107 NG43

05 15 10 56 2025  31.6 -114.5 3.2 GULF OF CALIFORNIA             M119 SG126 T76 D96 MA115 Z107 NG59

05 15 10 22 2025  41.1 -116.7 2.2 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

05 15 09 51 2025  31.7 -102.0 2.0 WESTERN TEXAS                  M123 SG132 T86 D92 MA122 Z114 NG60

05 15 09 39 2025  19.2  -65.1 3.2 VIRGIN ISLANDS REGION          M135 SG133 T113 D75 MA133 Z130 NG74

05 15 09 14 2025  17.3  -94.4 4.3 VERACRUZ, MEXICO               M139 SG122 T86 D77 MA115 Z109 NG75

05 15 09 08 2025  19.8 -155.6 3.0 ISLAND OF HAWAII, HAWAII       M98 SG98 T43 D104 MA84 Z76 NG68

05 15 08 27 2025 -26.4 -178.7 4.8 SOUTH OF FIJI ISLANDS          M95 SG47 T7 D78 MA33 Z25 NG112

05 15 08 06 2025  32.4 -101.7 2.0 WESTERN TEXAS                  M123 SG133 T86 D93 MA123 Z115 NG59

05 15 07 55 2025  24.2 -110.1 3.4 BAJA CALIFORNIA SUR, MEXICO    M127 SG122 T76 D88 MA112 Z104 NG67

05 15 07 23 2025  27.1   58.7 3.8 SOUTHEASTERN IRAN              M34 SG108 T131 D132 MA115 Z120 NG62

05 15 07 18 2025  43.6 -110.4 2.4 WYOMING                        M110 SG138 T86 D106 MA126 Z117 NG48

05 15 07 18 2025  21.9   96.8 3.9 MYANMAR                        M0 SG90 T96 D143 MA90 Z92 NG65

05 15 07 12 2025  18.8 -107.1 4.3 OFF COAST OF JALISCO, MEXICO   M133 SG118 T76 D82 MA109 Z102 NG73

05 15 07 08 2025  41.2 -116.8 3.4 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

05 15 07 06 2025  41.1 -116.8 3.7 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

 

May 15, 2025

 

Notable earthquakes and events:

 

 

 

A strong earthquake of M 5.9-6.0 hit the Banda Sea of Indonesia today. It was felt with moderate intensity in Lesser Timor, Indonesia.

It was probably promoted by the M5.3 flare of April 14 as noted in the previous issues of this summary:

 

"The solar flare (of X1.2)  was followed by a second strong flare of M5.3 around 03:30 UT on May 14.

 

The M5.3 flare was accompanied by a strong M 6.4 at 04:15 UT in Tonga.

The Banda Sea of Indonesia is directly was local solar noon when this flare was maximized. This area is likely to see a strong earthquake in the next day due to SFE." (April 14, 2025)

 

The solar flare of X1.2 was followed by a major X2.5 flare which occurred about 08:00 UT on

May 14, 2025. It was followed by a series of moderate quakes and may promote

seismicity in (among other areas) the west coast of the U.S. ( at 120 West longitude - near local solar midnight at the time of the flare)

and in central Asia (60 East longitude) - local solar noon. This flare is the strongest

since a X9.0 on October 3, 2024 (SWPC #5530). Today's flares are likely to

trigger a geomagnetic storm in the next two days (and a bright aurora and

electronic malfunctions). Earthquakes of M 4.4 in Pakistan and M 5.1 in the

South Indian Ocean occurred between 60 and 70 East longitude today.

 

The full moon arrived on May 12, 2025 at 16:56 UT. Longitudes which are sub-solar (local solar noon) are near 75 West while those at local solar midnight are near 105 East longitude. In the west these include areas of Central America and the Caribbean and the west coast of South America while in the east these areas include western Indonesia, southeast and central Asia. These areas are most likely to see tidal triggering with this full moon.

 

BANDA SEA

 

An earthquake of M 5.9-6.0 occurred today in the Banda Sea of Indonesia.

BMG reported it was felt within about 100 km of the epicenter with intensity up to V.

NEIC reported it with M 5.9 in Kep. Barat Daya was felt with intensity III in Dili, East Timor, Indonesia.

EMSC reported light to moderate shaking in Dili, Timor-Leste, Indonesia.

 

The last event in the Banda Sea within about 200 km from today's epicenter of

significantly larger magnitude than M 5.9 occurred on December 29, 2021. At the

time this summary noted:

 

A major earthquake of M 7.3-7.4 occurred today in the region of East Timor, Indonesia today. NEIC reported maximum intensity VI in East Timor at Los Palos; V in Baucau, Dili Dili, Bazaitete; IV in Lautem, Manatuto, Metinaro, Sual Coya, Oecussi and Ambon.

BMG (the local network) gave this event M 7.4 and reported it was felt with intensity V-VI in Tiakur, Tepa; IV in Saumlaki, III-IV in Darwin, Australoia, Waingapu; III in Rote, II in Sabu, Kota Sorong, Raja Ampat and III in Tual, Indonesia.

BMC reported an aftershock of M 5.6 in Timur, Indonesia was felt with intensity III in the area(s) of  Indonesia at Bolaang Mongondow Timur, Kabupaten Gorontalo, Koita Gorontalo, III in Poso, Minahasa Selatan, MI in Gorontalo Utara, Kotamobagu and Tomohon.

This may have been promoted by strong tidal stresses associated with the previous

full moon

 

...

 

The last earthquake in the world of M>=7.4 occurred a month ago in Northern Peru with

M 7.4-7.5. The last earthquake in the world of larger magnitude was an M 8.1 on

August 12, 2021. Today's earthquake near the geomagnetic equator occurs at end of the strongest solar activity of the

new solar active period and had been expected in this summary on December 22 as:

 

 

"Historically major changes in sunspot number has been followed within several days

by major or great earthquakes, especially after long periods of relative solar

quiet (as in the current situation). A precautionary global seismic alert is therefore being posted by this

summary for the next week with a strongly increased likelihood of a major

event in this time period." (December 22-23, 2021)

 

Today's event in Timor is the strongest within about 200 km in at least 30 years.

Earthquakes about 250 km northeast of today's epicenter occurred on June 24, 2019

with M 7.3 and M 7.5-7.6 on January 27, 2006. It occurred at 103 degrees from

the strong activation of seismicity in Crete, Greece and may have

been promoted by energy from that source." (December 29, 2021)

 

Today's epicenter is located at the sixth node from the M 7.1 in Tonga of March 30

(node 6) and at the seventh node (52 degrees) from the Macquarie Islands (M 6.8) and New Zealand of March 25 (M 6.8)

and may have been promoted by energy from those sources.

 

As noted in the previous issue of this summary today's event in the Banda

Sea is closely connected to the M5.3 solar flare of May 14 as:

 

"The solar flare (of X1.2)  was followed by a second strong flare of M5.3 around 03:30 UT on May 14.

 

The M5.3 flare was accompanied by a strong M 6.4 at 04:15 UT in Tonga.

The Banda Sea of Indonesia was directly at local solar noon when this flare was maximized. This area is likely to see a strong earthquake in the next day due to SFE." (May 14, 2025)

 

Forecast 172220 had expected a moderately strong earthquake within about 25 km

of this epicenter was likely around May 12.

 

O: 15MAY2025 00:50:52  7.1S 126.1E MW=5.9  EMSC   Banda Sea                 

O: 15MAY2025 00:50:52  7.2S 126.1E MW=6.0  BMG    Banda Sea, Indonesia      

P: 12MAY2025 172220    7.0S 126.0E 4.0-5.5 BAAAA  Banda Sea  

 

A pair of earthquakes of M 5.2 and 4.8 were felt today in northern Peru near the border with Ecuador. NEIC reported they were felt with intensity III in Ecuador at Eloy Alfaro, Guayas.

These earthquakes are located at 103 degrees (node 7) from the M 6.8 in Macquarie Island

of April 29  at 51.5 degrees (node 7) from the Drake Passage event of May 2 and may have been promoted by energy from that source.

 

 

The strongest earthquake in the U.S. or Canada today was an M 3.9-4.0 in northern Nevada near Valmy. NEIC reported maximum intensity IV in Mountain City, Nevada and II in Nevada at Austin, Gardnerville, Winnemucca and Sring Creek with II also felt in Boise, Idaho.

The mainshock was followed by a lightly felt aftershock of M 2.8 and two M 3.0 foreshocks.

This activity was located at the third node (120 degrees) from the Macquarie Island

earthquake of April 29 (M 6.8) and may have been promoted by energy from that source.

Earthquakes in west Texas were also located today at this distance from the Macquarie

epicenter. These epicenters are also at 106 degrees from the M 7.4 in the Drake Passage

of May 2 and may have been promoted from that source as well. Other earthquakes

at this distance from the Drake Passage today were an M 3.3 west of Hawaii and

a number of light earthquakes in Central California and southern California.

 

An M 3.0 earthquakes was reported off the coast of western Oregon today following

a major solar flare. This is an area where a volcanic eruption is expected

in the near future and today's event may indicate that event could occur soon.

 

Data for this solar flare from SWPC follow:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

3440       1104   1119      1131   M7.7      (May 14, 2025)   7.2E-02  

Costa Rica M 4.5 11:24 UT

Off coast of Oregon M 3.0 11:24 UT

 

An earthquake of M 3.3 occurred today west of the island of Hawaii. NEIC reported

it was felt with intensity III in Hawaii at Captain Cook, Kailua Kona, Kealakekua, and II in Holualoa.

EMSC reported small jolt in Hawaii at Kailua Kona and Kealakekua.

 

NEIC reported an earthquake of M 3.0 in Southern Idaho was felt with  intensity up to II-III in the area(s) of Southern Idaho at Challis with IV.

 

NEIC reported an earthquake of M 3.6 in Southern Alaska was felt with  intensity up to II-III in the area(s) of Southern Alaska with III in Willow, Wasilla and II in Girdwood, Eagle River and Anchorage.

 

 

NEIC reported an earthquake of M 2.7 in Oklahoma was felt with  intensity up to II-III in the area(s) of Oklahoma in Owasso and Dover with III and II in Oklahoma City.

 

NEIC reported an earthquake of M 3.6 in the Cook Strait, New Zealand was felt with  intensity up to II-III in the area(s) of the Cook Strait, New Zealand with III in Wanganui and II in New Plymouth, Taranaki.

GeoNet reported the following parameter for this event:

 

O: 14MAY2025 08:45:20 40.2S 174.5E MB=4.1  GEONET Felt with moderate to strong intensity in the area of French Pass, New Zealand and in southern North Island and northern South Island. 1369 reports of felt events were made of which 920 reported weak and 427 light intensity with 20 reports of moderate shaking and 0 with strong and 0 severe and 2 with extreme intensity came from the area.

 

NEIC reported an earthquake of M 3.1 in northern Washington State was felt with  intensity up to II-III in the area(s) of northern Washington State with III in Oroville, Tonasket and II in Omak and Riverside.

 

EMSC reported an earthquake of M 4.7 in El Salvador was felt with  intensity up to IV in the area(s) of El Salvador at San Vicente.

 

 

No Tropical Cyclones are currently active.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

 

3300       0145   0157      0208   C1.2      (May 14, 2025)   2.8E-04  

3320       0208   0215      0221   C2.1      (May 14, 2025)   1.5E-03  

Costa Rica M 4.4 02:37 UT

Canary Is. M 3.2 02:07  UT

Western Texas M 2.5 02:08 UT

 

3350       0305   0325      0335   M5.3      (May 14, 2025)   4.8E-02  

Tonga M 6.4 04:15 UT

Sumatra M 4.8 03:16 UT

Banda Sea, Indonesia M 5.9-6.0 00:50 UT (May 15, 2025)

 

3380       0700   0720      0734   C5.5      (May 14, 2025)   1.4E-03  

3390       0736   0745      0751   M1.2      (May 14, 2025)   8.5E-03  

Los Angeles, California M 2.3 07:54 UT

New Guinea M 4.1 07:42 UT

 

3410       0804   0825      0831   X2.7      (May 14, 2025)   2.1E-01  

South Island, New Zealand M 3.6 08:04 UT

Molucca Sea M 4.3 08:07 UT

Honshu M 4.2 08:45 UT

Cook Strait, N.Z. M 4.1 08:45 UT

Myanmar M 4.0 09:07 UT

 

3440       1104   1119      1131   M7.7      (May 14, 2025)   7.2E-02  

Costa Rica M 4.5 11:24 UT

Off coast of Oregon M 3.0 11:24 UT

 

3460       1413   1427      1433   C2.4      (May 14, 2025)   2.5E-03  

New Guinea M 4.1 14:35 UT

 

3470       1643   1651      1655   C1.6      (May 14, 2025)   6.2E-04      

3500       1743   1753      1759   C1.8      (May 14, 2025)   1.7E-03  

3480       1759   1811      1818   M4.7      (May 14, 2025)   3.0E-02  

Northern Peru M 5.2 20:13 UT

 

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:  active May 15 and 17 quiet May 16.  Solar M-flare chance: 75% X-class: 30% proton storm: 10%

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)    16 24 13 17:00 5   53 122

 

A strong Gamma Ray Burst was recorded by SWIFT on May    9, 2025 at 22:33:30 UT (#250509A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the M 6.8 in Macquarie Island region (white stipples).

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05 15 07 12 2025  18.8 -107.1 4.3 OFF COAST OF JALISCO, MEXICO   M133 SG118 T76 D82 MA109 Z102 NG73

05 15 07 08 2025  41.2 -116.8 3.4 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

05 15 07 06 2025  41.1 -116.8 3.7 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

05 15 06 22 2025  48.8 -119.5 3.0 WASHINGTON                     M102 SG138 T84 D113 MA125 Z116 NG42

05 15 06 17 2025  66.5  -17.6 3.4 ICELAND REGION                 M78 SG168 T131 D128 MA167 Z161 NG27

05 15 05 05 2025  37.1  140.6 3.8 EASTERN HONSHU, JAPAN          M41 SG100 T71 D152 MA91 Z87 NG48

05 15 04 55 2025  47.4 -124.1 2.1 OLYMPIC PENINSULA, WASHINGTON  M102 SG135 T80 D113 MA122 Z113 NG43

05 15 04 31 2025  17.7  -95.0 4.2 VERACRUZ, MEXICO               M139 SG122 T86 D77 MA115 Z109 NG74

05 15 04 19 2025  18.2  -68.0 3.4 MONA PASSAGE, DOMINICAN REPUBL M137 SG131 T110 D74 MA131 Z127 NG75

05 15 03 45 2025  44.6 -114.3 3.0 SOUTHERN IDAHO                 M108 SG137 T84 D108 MA124 Z116 NG46

05 15 03 26 2025  40.3 -124.4 2.2 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05 15 03 10 2025  39.4 -120.3 2.4 NORTHERN CALIFORNIA            M110 SG130 T77 D105 MA117 Z109 NG51

05 15 02 40 2025  38.2 -117.8 2.1 NEVADA                         M112 SG130 T78 D103 MA118 Z109 NG53

05 15 01 50 2025  35.3 -118.6 2.1 CENTRAL CALIFORNIA             M114 SG128 T76 D101 MA115 Z107 NG55

05 15 01 41 2025 -20.7 -177.8 4.5 FIJI REGION                    M94 SG53 T3 D83 MA39 Z30 NG107

05 15 01 40 2025  13.2   50.8 4.5 GULF OF ADEN                   M43 SG99 T136 D116 MA108 Z115 NG76

05 15 00 50 2025  -7.1  126.1 6.0 KEPULAUAN BARAT DAYA, INDONESI M41 SG56 T59 D115 MA52 Z52 NG92

05 15 00 50 2025  -7.1  126.1 5.9 KEPULAUAN BARAT DAYA, INDONESI M41 SG56 T59 D115 MA52 Z52 NG92

05 14 23 48 2025  66.6  -17.8 4.2 ICELAND REGION                 M78 SG168 T131 D128 MA167 Z161 NG27

05 14 23 45 2025  36.1 -120.2 2.8 CENTRAL CALIFORNIA             M112 SG128 T75 D102 MA115 Z107 NG54

05 14 22 46 2025  31.1 -116.0 3.4 BAJA CALIFORNIA, MEXICO        M118 SG125 T75 D96 MA114 Z105 NG60

05 14 22 39 2025  13.0  -89.0 4.0 OFFSHORE EL SALVADOR           M144 SG120 T89 D71 MA115 Z110 NG79

05 14 22 30 2025  61.5 -151.3 3.6 SOUTHERN ALASKA                M81 SG136 T83 D134 MA122 Z114 NG27

05 14 22 15 2025  31.4 -115.5 3.2 BAJA CALIFORNIA, MEXICO        M118 SG126 T76 D96 MA114 Z106 NG60

05 14 22 02 2025 -44.0  169.6 3.7 SOUTH ISLAND OF NEW ZEALAND    M94 SG27 T27 D68 MA13 Z5 NG130

05 14 21 22 2025  -6.1  147.8 4.5 EASTERN NEW GUINEA REG., P.N.G M57 SG58 T39 D110 MA48 Z44 NG91

05 14 21 20 2025  40.5 -126.0 2.5 OFF COAST OF NORTHERN CALIFORN M106 SG129 T75 D108 MA115 Z107 NG50

05 14 21 01 2025 -11.8  -77.7 4.1 NEAR COAST OF CENTRAL PERU     M168 SG100 T91 D45 MA100 Z98 NG105

05 14 20 29 2025  31.6 -104.5 2.3 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05 14 20 21 2025 -20.3 -177.5 4.5 FIJI REGION                    M94 SG53 T3 D83 MA39 Z31 NG106

05 14 20 13 2025  -5.9  -81.1 5.2 NEAR COAST OF NORTHERN PERU    M163 SG105 T90 D51 MA104 Z101 NG99

05 14 20 12 2025  31.6 -104.3 2.3 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05 14 20 08 2025  -5.9  -81.6 4.1 NEAR COAST OF NORTHERN PERU    M163 SG105 T90 D51 MA103 Z100 NG99

05 14 16 33 2025 -56.8 -140.9 5.2 PACIFIC-ANTARCTIC RIDGE        M126 SG39 T43 D38 MA35 Z33 NG145

05 14 16 33 2025  33.6  140.6 4.5 IZU ISLANDS, JAPAN REGION      M40 SG97 T68 D149 MA88 Z84 NG52

05 14 16 19 2025  12.6  -88.2 4.7 OFFSHORE EL SALVADOR           M145 SG120 T90 D71 MA115 Z110 NG80

05 14 16 08 2025  36.0  -97.9 2.0 OKLAHOMA                       M120 SG137 T91 D95 MA127 Z120 NG56

05 14 16 01 2025  36.0  -97.9 2.7 OKLAHOMA                       M120 SG137 T91 D95 MA127 Z120 NG56

05 14 15 51 2025  15.4  -94.4 4.0 OFFSHORE CHIAPAS, MEXICO       M141 SG120 T85 D75 MA114 Z108 NG77

05 14 15 35 2025  35.3 -119.4 2.0 CENTRAL CALIFORNIA             M113 SG127 T75 D101 MA115 Z106 NG55

05 14 15 09 2025  41.2 -116.7 2.0 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

05 14 14 35 2025  -1.3  134.4 4.1 NEAR N COAST OF PAPUA, INDONES M44 SG62 T53 D119 MA55 Z53 NG86

05 14 13 32 2025  41.2 -116.7 2.8 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

05 14 13 26 2025  38.8 -122.8 2.0 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05 14 12 51 2025  41.2 -116.7 2.1 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

05 14 12 35 2025  41.1 -116.8 4.0 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

05 14 12 35 2025  41.1 -116.8 3.9 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

05 14 12 02 2025  41.2 -116.7 3.0 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

05 14 12 01 2025  41.1 -116.9 3.0 NEVADA                         M110 SG133 T80 D105 MA121 Z112 NG50

05 14 11 24 2025  43.1 -126.6 3.0 OFF COAST OF OREGON            M104 SG131 T76 D110 MA117 Z108 NG47

05 14 11 24 2025  10.4  -86.2 4.5 OFF COAST OF COSTA RICA        M147 SG119 T91 D68 MA115 Z110 NG82

05 14 10 47 2025 -24.0   70.2 4.9 MID-INDIAN RIDGE               M52 SG57 T103 D92 MA67 Z75 NG112

05 14 10 36 2025  17.9  -98.4 4.0 GUERRERO, MEXICO               M137 SG121 T83 D78 MA114 Z107 NG74

05 14 10 30 2025  25.0   94.8 3.9 MYANMAR-INDIA BORDER REGION    M3 SG93 T99 D145 MA94 Z96 NG62

05 14 10 21 2025  66.5  -17.7 3.7 ICELAND REGION                 M78 SG168 T131 D128 MA167 Z161 NG27

05 14 10 16 2025  19.6 -156.1 3.2 HAWAII REGION, HAWAII          M98 SG98 T43 D105 MA84 Z75 NG68

05 14 10 02 2025  31.5   69.2 4.4 PAKISTAN                       M25 SG108 T122 D141 MA112 Z116 NG57

05 14 09 55 2025  19.7 -106.5 3.8 OFF COAST OF JALISCO, MEXICO   M133 SG119 T77 D82 MA110 Z103 NG72

05 14 09 34 2025  17.2  -94.7 4.0 VERACRUZ, MEXICO               M139 SG122 T86 D76 MA115 Z109 NG75

05 14 09 33 2025  -5.5  147.2 4.8 EASTERN NEW GUINEA REG., P.N.G M57 SG58 T40 D111 MA48 Z45 NG91

05 14 09 07 2025  22.1   96.4 4.0 MYANMAR                        M0 SG90 T97 D143 MA91 Z92 NG64

05 14 08 52 2025  18.0  -68.3 3.4 DOMINICAN REPUBLIC REGION      M137 SG131 T110 D74 MA130 Z127 NG75

05 14 08 45 2025 -40.2  174.6 4.1 COOK STRAIT, NEW ZEALAND       M95 SG33 T22 D69 MA19 Z10 NG126

05 14 08 45 2025 -40.2  174.6 3.6 COOK STRAIT, NEW ZEALAND       M95 SG33 T22 D69 MA19 Z10 NG126

05 14 08 32 2025  38.6  141.5 4.2 NEAR EAST COAST OF HONSHU,     M42 SG102 T71 D153 MA93 Z88 NG47

05 14 08 07 2025  -0.1  124.4 4.3 MOLUCCA SEA                    M35 SG64 T63 D122 MA59 Z59 NG85

05 14 07 54 2025  34.1 -117.3 2.3 GREATER LOS ANGELES AREA, CALI M115 SG127 T76 D99 MA115 Z107 NG57

05 14 07 42 2025  -0.2  134.6 4.1 NEAR N COAST OF PAPUA, INDONES M43 SG63 T54 D120 MA56 Z54 NG85

 

 

May 14, 2025

 

Notable earthquakes and events:

 

 

A major solar flare of X1.2 (SWPC #3220) occurred today about 15:30 UT. This is the strongest solar flare reported by SWPC since flare 5990 of X2.0 on February 23, 2025.

A solar flare of X1.1 occurred on March 28, 2025 and was associated with the M 7.7 in Myanmar of the same date.

Major solar flares can help promote strong earthquakes in the hours after the flare.

 

The X1.2 (3220) solar flare was followed by a second strong flare of M5.3 maximizing around 03:35 UT on May 14.

Longitudes at local solar noon when this flare was maximized are near 126 East longitude and include

the Banda Sea, Indonesia. SFE from this flare could trigger a strong earthquake in this area in the next day.

The M5.3 flare was accompanied by a strong M 6.4 at 04:15 UT in Tonga.

 

This flare was followed by a major X2.5 flare which occurred about 08:00 UT on

May 14, 2025. It was followed by a series of moderate quakes and may promote

seismicity in (among other areas) the west coast of the U.S. ( at 120 West longitude - near local solar midnight at the time of the flare)

and in central Asia (60 East longitude) - local solar noon. This flare is the strongest

since a X9.0 on October 3, 2024 (SWPC #5530). Today's flares are likely to

trigger a geomagnetic storm in the next two days (and a bright aurora and

electronic malfunctions).

 

An earthquake of M 6.2 in Crete, Greece followed the X1.2 flare. This quake was felt widely in the region of Crete.

 

An earthquake of M 5.9 occurred in the area of Jalisco, Mexico near local solar noon today. It was felt with moderate intensity in Jalisco.

 

A second earthquake hit the region Iceland with M 4.5 today. This follows an  M 4.7 occurred north of Iceland yesterday. It is not associated with current volcanic activity in the area.

 

The full moon arrived on May 12, 2025 at 16:56 UT. Longitudes which are sub-solar (local solar noon) are near 75 West while those at local solar midnight are near 105 East longitude. In the west these include areas of Central America and the Caribbean and the west coast of South America while in the east these areas include western Indonesia, southeast and central Asia. These areas are most likely to see tidal triggering with this full moon.

 

TONGA

 

An earthquake of M 6.4 hit the region of Tonga today. NEIC reported it was felt with intensity III in Tongatapu, Tonga at Tofoa-Koloua and II in Nuku'alofa.

The last earthquake of M>=6.4 in Tonga within about 200 km of this epicenter

was an M 7.0-7.1 on March 30, 2025. At the time this summary noted:

 

 

"A strong earthquake of M 7.1 hit the region of Central Tonga today. NEIC initially reported it

was felt with intensity IV in Tongatapu, Tonga at Tofoa-Koloua and in Alofi, and Makefu, Niue and III in Mu'a, Nuku'alofa and Neiafu, Tonga.

A foreshock of M 4.4 occurred early on March 29 near the mainshock epicenter (see earthquake list below). This event occurred within minutes of local solar midnight and was probably

promoted by a combination of strong tidal stresses with the solar eclipse of

March 29; the M 7.7 in Myanmar of March 28 and the recent strong geomagnetic

storm which effects are strongest at local solar noon and midnight. This earthquake

may have generated a regional moderate tsunami, but a Pacific-wide tsunami is

unlikely. Nevertheless residents in the Tonga/Fiji/New Zealand area ought to

seek higher ground and not approach the ocean in the next couple of hours.

Initial observations by JTWC and PTWC do not indicate a hazardous tsunami but warns for dangeroud sea level fluctuations and strong currents are still in effect.

The last earthquake in Tonga within about 200 km of today's epicenter with M>=7.1

occurred as a great M 8.0 on May 3, 2006, the only such event in the past 35 years.

Earthquake about 300 km from today's epicenter since 1990 also occurred on

November 11, 2022 (M 7.3) and October 14, 1997 (M 7.8). The earthquake of

November 11, 2022 followed a similar eclipse in October, 2022 and had been

in this summary as a possible area for a major earthquake at this time" (March 30, 2025)

 

This event was probably promoted by SFE from a strong M5.3 solar flare which

reached maximum less than an hour before this earthquake. Data for this flare

from SWPC follow:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

3350       0305   0325      0335   M5.3      (May 14, 2025)   4.8E-02  

Tonga M 6.4 04:15 UT

 

Forecast 172430 had expected this event in Tonga within about 200 km was likely

around May 13, 2025.

 

O: 14MAY2025 00:15:38 18.7S 175.3W ML=6.4  NEIC   Tonga        

P: 13MAY2025 172430   17.0S 174.0W 4.0-5.5 ABAAA  Tonga Islands

 

CRETE, GREECE, CYPRUS

 

An M 6.1-6.3 shook large areas of Crete, Greece and Cyprus in the eastern Mediterranean today. NEIC reported maximum shaking of VI in the epicentral area at Karpathos, Dodecanese Islands, Greece and as far as Faraskur, Egypt. Intensity V was felt in Egypt at Port Said, Damanhoor,El Mahmoodia, Qowesna, Benha, Mashtool el Sook; Saudi Arabia and Lasithi, Greece. Lesser shakeing was reported in Egypt, with IV in Cairo and Gizeh, in Crete, Greece, and the Dodecanese Islands, Israel, Palestine, Turkey, Jordan, Lebanon, Malta, and Syria.

This earthquake is the strongest in the region of Crete since an M 6.4 on October 12, 2021.

At the time this summary noted:

 

 

"The strongest geomagnetic storm in more than three years occurred today. Bright, mostly

green aurora were seen throughout most of North America and Asia with this storm.

The height of the storm occurred between 09:00 and 10:00 UT. At the same time

an M 6.5 occurred in the sub-solar region of Crete, Greece and the Dodecanese

Islands.

 

...

 

A strong aftershock of M 6.4 also hit eastern Crete, Greece today. This event was

reported with maximum intensity VII in Crete at Sitia; IV in Ierapetra, Iraklion, and II-III in Nea Alikarnassos and Khanion, Greece.

Many buildings were damaged including a chapel which collapsed. People fled

from their homes during the quake but there were no immediate reports of casualties.

After a lull in the geomagnetic storm, it resumed about 07:00 UT on October 12, 2021

with high latitude AP 7 at about 09:00. It is likely that this helped

promote the earthquake in Crete at this same time. A strong M 6.0 hit Crete

about 200 km west of today's epicenter occurred on September 27, 2021, an earthquake which killed one and did considerable damage, and this may

be a regional aftershock of that event. The last earthquake of larger magnitude

in Crete occurred on May 2, 2020 with M 6.6, the strongest in the region

in the past 30 years. A similar M 6.6 about 200 km northeast of this occurred

on July 20, 2017. The only event of M>=6.4 within about 100 km of today's

event in the past 30 years was an M 6.4 on July 1, 2009. Today's earthquake

in Crete occurred within about an hour of local solar noon and was probably

promoted by high tidal stresses which maximize near this hour." (October 12, 2021)

 

This earthquake occurred near the maximum output of solar flare #3270 - a C2.3 class

event. Data from SWPC for this flare follow:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

3270       2234   2241      2253   C2.3      (May 13, 2025)   2.0E-03  

Dodecanese Is. M 6.0 22:51 UT

 

This epicenter is located at 121 degrees (node 5) from the M 7.4 in the Drake Passage of May 2 and may have been promoted by energy from that source.

Other earthquakes at this distance from the Drake Passage today occurred in

the Molucca Sea, Indonesia and as an M 4.4 in the Naples, Italy area.

 

This event may also have been promoted by a strong mid-latitude meteorological

storm with its center currently near the antipode of the earthquake in Crete.

 

Forecast 172292 had expected this event in the Aegean Sea within about 25 km was likely

around May 13, 2025.

 

O: 13MAY2025 22:51:15 35.2N  27.0E ML=6.1  EMSC   Crete, Greece             

P: 13MAY2025 172292   35.0N  27.0E 3.0-4.6 AAAAA  Aegean Sea 

 

JALISCO, MEXICO

 

An M 5.9 earthquake occurred off the west coast of Jalisco, Mexico today. NEIC reported it was felt with intensityup to III in Jalisco at Puerto Vallarta and in Nayarit, Mexico at Le Penita de Jaltemba.

This earthquake occurred near local solar noon and may have been promoted by

strong tidal stresses with the full moon of May 12, 2025 (see forecast above).

 

It is the strongest earthquake in the region of Jalisco, Mexico since an M 6.6 on

January 21, 2016. At the time this summary noted:

 

 

"A strong earthquake of M 6.6 hit off the coast of Jalisco, Mexico today. This

activity followed several days of unusual activity in North America and had been anticipated in this summary on January 18 as follows:

 

"A series of unusual earthquakes hit today from Cuba and Honduras (M 4.5-5.1) to Virginia (M 3.0)

to Texas (M 3.5) and as far north as northern Alaska (M 4.8, 4.6) today.

This may represent a sudden motion of the North American Plate. If so, further

unusual seismicity is likely, especially along the western boundary of the

North American plate, in the next several days." (January 18, 2016)

 

It should not surprise readers of this summary that a major tropical cyclone in the

South Pacific Ocean reached major status today. The eye of this storm is currently

at 18S 73E. This is antipodal to the epicenter of the Jalisco earthquake (18-19N

107W). Readers recall that two locations are exactly antipodal if their latitudes

are the same and in opposite hemisphers (compare 18N and 18S) and their

longitudes in opposite hemispheres and numerically add to 180 (consider 73E+107W=180).

So, the main trigger for this earthquake in Jalisco appears microseismis from Tropical

Cyclone Corentin (08S). Other promoters appear to be the strongest geomagnetic storm

of the year 2016 which peaked near the time of this earthquake and tidal

effects from the upcoming full moon.

 

 

NEIC reported this earthquake in Jalisco was felt in Mexico in Jalisco at Guadalajara, Guzman, Las Juntas, and Puerto Vallarta; in San Luis Potosi and in Todos Santos, Baja California Sur. No damage or tsunami were reported with this earthquake.

The last earthquake of M>=6.6 within about 200 km of this epicenter occurred

on May 1, 1997 with M 6.9, the only such earthquake in the past 25 years. This

area was the landfall region for Hurricane Patricia which hit the area on October

23-24, 2015. At 170-210 kts, this was considered the strongest Hurricane ever

to hit North America. In the summary issue for October 23, 2015 it was noted:

 

"Hurricane Patricia continued south of Jalisco, Mexico today with winds up to 170 kts.

Wind speeds rose from 70 kts at this time yesterday to 170 kts today, an incredible increase in such a short time. This is one of the strongest storms to hit the coast of Mexico in years. NHC has issued

a warning that landfall of this category 5 hurricane could be potentially catastrophic

in the region of Jalisco, Mexico. At 170 kts (195 mph) this is the highest wind speed ever

recorded for a hurricane in the eastern north Pacific. Hurricane Linda in 1997 came in at 160 kts.

The estimated central pressure of 892 mb also braks the record from the lowest

pressure of an east Pacific hurricane. It is expected to track to the NNW over the next several days. Seismicity in Western Mexico could increase

while this storm is in the area. A moderate earthquake is possible in the region

as this system makes landfall in the next several days. Landfall is expected near

Manzanillo around October 23-24. This active area at about 17-18N and 103-104 West longitude

could also see a moderate to large earthquake associated with landfall of Patricia." (October 23-24, 2015)

 

 

There was some activity in the area at the time of landfall but it appears that

the regional activation expected waited until this time for a strong earthquake

to occur. There has been some precursory activity in the area suggestive of a

larger upcoming event. For example on January 8, 2016 an M 5.3 occurred within

25 km of this epicenter. At the time is summary noted:

 

"The strongest earthquake in North America today was an M 5.3 southwest of Puerto Vallarta,

Jalisco, Mexico.  NEIC reported this earthquake of M 5.3 off the coast of Jalisco, Mexico may have been felt with intensity II-III in the area(s) of Mexico City, Mexico.

This is the strongest earthquake to hit within about 150 km of this epicenter since

an M 6.2 about 40 km southeast of this epicenter on February 22, 2015." (January 8-9, 2016)

 

This event occurred two days before the new moon of January 10 - similar to today's

event two days before the full moon. Both occurred within an hour of local solar noon, suggestive that

tidal stresses promoted the events (the event today occurred at 12:06 local time according to UNAM). Today's M 6.5-6.6 was preceded nine hours earlier

by an M 4.0 at the same epicenter as the large earthquake. Another promoter of

today's event may be landfall on the U.S. Gulf of Mexico coast of the first

major winter storm of the year. This storm is expected to track over the eastern

U.S. causing major disruption. The storm pushed North America to the north

off the Pacific subduction zone and reducing friction across large areas especially

in the area of western Mexico." (January 21, 2016)

 

 

This epicenter is near 103 degrees from the M 6.8 in Macquarie Island of April 29 as well as near this

nodal distance from recent strong earthquakes in New Britain and New Zealand,

and may have been promoted by energy from those sources.

 

Forecast 172252 had expected this event in the Jalisco, Mexico within about 50 km was likely

around May 13, 2025.

 

O: 13MAY2025 20:43:04 18.7N 107.2W ML=5.9  EMSC   Jalisco, Mexico           

P: 13MAY2025 172252   19.0N 107.0E 3.5-5.2 AAAAA  Coast of Jalisco, Mexico

P: 17MAY2025 172252   18.0N 106.0E 3.5-5.4 BAAAA  Coast of Jalisco, Mexico

 

BONIN ISLANDS, JAPAN

 

An M 5.5 followed the X1.2 flare by about an hour in the Bonin Islands, Japan. NEIC reported likely shaking up to III in the remote epicentral area.

The flare occurred while this epicenter was near local solar midnight and

probably affected it through SFE.

Data for this flare from SWPC follow:

 

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

3220       1525   1538      1544   X1.2      (May 13, 2025)   5.8E-02  

South of Sumatra M 3.6 15:44 UT

Southern Peru M 3.6 16:16 UT

Honshu M 4.0 16:44 UT

Bonin Is. M 5.5 16:52 UT

 

This is the largest earthquake reported in the Bonin Islands within about 200

km of today's epicenter since an M 6.6 on April 18, 2020.

At the time of that event this summary noted:

 

Today's M 5.5 in the Bonin Islands is the strongest within about 150 km of this

epicenter since an M 6.5 on April 27, 2024. At the time this summary noted:

 

 

"A strong M 6.6 earthquake shook the Bonin Islands of Japan today at a deep focus (490 km). It was reported felt in southern Honshu more than 1000 km from the epicenter with intensity II-III in Japan at Chiba, Kanagawa, Tokyo, and Saitama.

JMA reported it was felt in Tokyo and Ogasawara, Japan with intensity IV. No tsunami was expected or observed from this deep focus event. This is the strongest earthquake in the Bonin Islands since an M 7.8 on May 30, 2015

at a deep focus.

 

The occurrence of this strong earthquake today at 140 East longitude on the Pacific Rim is consistent

with promotion by tidal stresses associated with the full moon." (April 18, 2020)

 

A regional foreshock in the Bonin Islands of M 5.4 also occurred on April 24, 2024.

It was described in a previous issue of this summary as:

 

"A moderately strong earthquake of M 5.4 also occurred today in the Bonin Island

south of Honshu, Japan. It may have been lightly felt in the epicentral area.

The last event of M>=5.4 in the Bonin Islands within about 200 km of this

epicenter occurred as an M 5.9 on June 21, 2022. At the time this

summary noted:

 

"An earthquake of M 5.9 also occurred in the Bonin Islands of southern Japan today. It was not reported felt in this remote area.

This is the strongest earthquake within about 200 km of this epicenter since an M 7.4

on December 21, 2010 and aftershocks of M 6.2 and 6.4 on December 22, 2010.

More recent earthquakes in the area have occurred with M>=5.9 at deep focus

about 250 km to the west of today's event with M 6.0 on May 26, 2012; M 7.8 on May 30, 2015

and M 6.6 on May 18, 2020." (June 21, 2022, April 25, 2024, April 27, 2024))

 

 

This epicenter is located at 144 degrees (node 5) from the M 7.4 in the Drake Passage of May 2 and may have been promoted by energy from that source.

Earthquakes of M 4.0 also occurred at this distance from the Drake Passage today

in the areas of Taiwan.

 

Forecast 172001 had expected this event in the Bonin Islands, Japan within about 200 km was likely

around May 17, 2025.

 

 

O: 13MAY2025 16:52:35 27.3N 140.1E ML=5.5  EMSC   Bonin Islands, Japan      

P: 17MAY2025 172001   26.0N 143.0E 4.0-5.4 BBAAA  Bonin Islands

 

NAPLES, ITALY

 

An earthquake of M 4.4 shook the region of Naples, Italy today causing concern

of a coming volcanic event among residents. NEIC reported maximum intensity IV in Campania at Naples with III in Casoria and II in Sorrento, Italy.

EMSC reported moderate shaking in the Naples, Italy area at Pozzuoli with slight damage, Quarto, Naples, Casoria, Aversa, San Giorgio a Cremano, Frattamaggiore, Afragola, Trecase, Minturno, Belvedere Marittimo.

 

This is the strongest earthquake in the area of central Italy within about 150 km of this epicenter since an M 4.7 on March 28, 2023.

An M 4.2 hit the Naples area on March 13, 2025. At the time this summary noted:

 

 

"NEIC reported an earthquake of M 4.2 in Naples, Italy was felt with  intensity up to II-III in the area(s) of  Naples, Italy with V in Pozzuoli, Campania; IV in Monte di Procida, Naples, Quarto, III in Bacoli, Orta di Atellaand San Giorgio a Cermano and in Penna Sant' Andrea Abruzzen, Italy.

EMSC reported this event at M 4.4 was felt strongly in Italy at Monte di Procida, Naples, Quarto, Afragola, Frattamaggiore, Pollena Trocchia, Pomigliano d'Arco, Acerra, Boscoreale, Nola.

This appears to be the strongest earthquake west of Naples in at least 40 years. The press

reported it was preceded by a loud earthquake noise. A lot of damage to facades

and ceilings was reported with the quake and in Bagnoli some people were trapped

in their houses. A ceiling collapse in Pozzuoli temporarily trapped a resident.

A series of aftershocks followed inflicting additional damage. An minor eruption of

Mount Vesuvius or Campi Flegrei is expected in the near future. The earthquake

occurred near local solar midnight and may have been promoted by strong

tidal stresses associated with the full moon and eclipse of March 14." (March 13, 2025)

 

 

Like earthquakes in Crete of M 6.1 and the Molucca Sea, this epicenter is located

at the third node (120 degrees) from the Drake Passage and may have been

promoted by energy from that source.

 

Forecast 172358 had expected this event in the Bonin Islands, Japan within about 100 km was likely

around May 15, 2025.

 

O: 13MAY2025 10:07:45 40.8N  14.1E ML=4.4  EMSC   Italy

P: 15MAY2025 172358   41.0N  15.0E 3.0-5.4 AAAAA  Italy          

 

ICELAND

 

An M 4.6 north of Iceland today was reported by NEIC to have been felt with intensity

II in Husavik, Sandoy Faroe Islands.

 

Forecast 172413 had expected enhanced seismicity in this area was likely around May 13, 2025.

 

O: 13MAY2025 04:02:04 66.5N  17.4W ML=4.7  NEIC   North of Iceland          

P: 13MAY2025 172413   65.0N  17.0W 3.0-4.6 ABAAA  Iceland area

 

The strongest earthquake felt in the U.S. or Canada today was an M 3.6 off the east coast of Hawaii. NEIC reported it was felt with intensity III in Kailua Kona and II in Hawaii at Kamuela, Mountain View, Pahoa, Pepeekeo.

This epicenter is located at 104 degrees from the M 7.4 of May 2 in the Drake Passage and may have been promoted by energy from that source.

Other earthquakes near this distance from the Drake Passage today included an M 2.3

in eastern Los Angeles, California. California may be vulnerable to a larger

quake at this time as it was directly at local solar midnight when a strong

M-class solar flare occurred near 08:00 UT on May 14.

 

Unusual earthquakes at nodal distances from the Drake Passage M 7.4 of May 2 also

occurred near the seventh node (52 degrees) in the East Pacific Rise (M 5.1); the fifth node (72 degrees) south of Australia (M 4.9) and Chiapas, Mexico (M 4.2), 

 

NEIC reported an earthquake of M 2.5 in Oklahoma was felt with  intensity up to II-III in the area(s) of Oklahoma at Dover.

 

NEIC reported an earthquake of M 2.6 in Northern California was felt with  intensity up to II-III in the area(s) of Northern California in Hoopa.

 

NEIC reported an earthquake of M 3.0 in Olympic Peninsula, Washington was felt with  intensity up to II-III in the area(s) of Olympic Peninsula, Washington at Kirkland, Seattle, Everett, Snohomish, Quilcene, Olympia, Aberdeen Westport, Longview, and Abbotsford, British Columbia.

 

NEIC reported an earthquake of M 2.5 in Oklahoma was felt with  intensity up to II-III in the area(s) of Oklahoma at Dover.

 

No Tropical Cyclones are currently active.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

3350       0305   0325      0335   M5.3      (May 14, 2025)   4.8E-02  

Tonga M 6.4 04:15 UT

Sumatra M 4.8 03:16 UT

 

3390       0736   0745      0751   M1.2      (May 14, 2025)   8.5E-03  

Los Angeles, California M 2.3 07:54 UT

New Guinea M 4.1 07:42 UT

 

3410       0804   0819      0831   X2.7      (May 14, 2025)   2.1E-02  

South Island, New Zealand M 3.6 08:04 UT

Molucca Sea M 4.3 08:13 UT

Honshu M 4.2 08:45 UT

Cook Strait, N.Z. M 4.1 08:45 UT

Myanmar M 4.0 09:07 UT

 

3480       1759   1811      1818   M4.7      (May 14, 2025)   3.0E-02  

Northern Peru M 5.2 20:13 UT

 

 

3200       1349   1357      1400   C3.7      (May 13, 2025)   1.4E-03  

Central East Pacific M 5.1 14:32 UT

 

3220       1525   1538      1544   X1.2      (May 13, 2025)   5.8E-02  

South of Sumatra M 3.6 15:44 UT

Southern Peru M 3.6 16:16 UT

Honshu M 4.0 16:44 UT

Bonin Is. M 5.5 16:52 UT

 

3270       2234   2241      2253   C2.3      (May 13, 2025)   2.0E-03  

Dodecanese Is. M 6.0 22:51 UT

Kirkira Region, Greece M 4.1 22:54 UT

 

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:  active May 15 unsettled May 14 quiet May 16.  Solar M-flare chance: 15% X-class: 1% proton storm: 75%

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)     9  6  9 20:00 3   54 117

 

A major solar flare of X1.2 (SWPC #3220) occurred today about 15:30 UT. This is the strongest solar flare reported by SWPC since flare 5990 of X2.0 on February 23, 2025.

A solar flare of X1.1 occurred on March 28, 2025 and was associated with the M 7.7 in Myanmar of the same date.

Major solar flares can help promote strong earthquakes in the hours after the flare.

 

The X1.2 (3220) solar flare was followed by a second strong flare of M5.3 maximizing around 03:35 UT on May 14.

Longitudes at local solar noon when this flare was maximized are near 126 East longitude and include

the Banda Sea, Indonesia. SFE from this flare could trigger a strong earthquake in this area in the next day.

The M5.3 flare was accompanied by a strong M 6.4 at 04:15 UT in Tonga.

 

 

 

A strong Gamma Ray Burst was recorded by SWIFT on May    9, 2025 at 22:33:30 UT (#250509A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the M 6.8 in Macquarie Island region (white stipples).

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05 14 08 07 2025  -0.1  124.4 4.3 MOLUCCA SEA                    M35 SG64 T63 D122 MA59 Z59 NG85

05 14 07 54 2025  34.1 -117.3 2.3 GREATER LOS ANGELES AREA, CALI M115 SG127 T76 D99 MA115 Z107 NG57

05 14 07 42 2025  -0.2  134.6 4.1 NEAR N COAST OF PAPUA, INDONES M43 SG63 T54 D120 MA56 Z54 NG85

05 14 06 53 2025  36.0  -97.9 2.4 OKLAHOMA                       M120 SG137 T91 D95 MA127 Z120 NG56

05 14 06 39 2025  36.0  -97.9 2.4 OKLAHOMA                       M120 SG137 T91 D95 MA127 Z120 NG56

05 14 06 10 2025  36.0  -97.9 2.5 OKLAHOMA                       M120 SG137 T91 D95 MA127 Z120 NG56

05 14 06 03 2025  36.0  -97.9 2.3 OKLAHOMA                       M120 SG137 T91 D95 MA127 Z120 NG56

05 14 05 50 2025  49.9  156.7 4.4 KURIL ISLANDS                  M54 SG114 T74 D152 MA103 Z97 NG36

05 14 05 20 2025  66.5  -17.7 4.6 ICELAND REGION                 M78 SG168 T131 D128 MA167 Z161 NG27

05 14 05 19 2025  15.0  -92.4 4.2 CHIAPAS, MEXICO                M142 SG121 T87 D74 MA115 Z109 NG77

05 14 05 07 2025  18.6  -65.0 3.4 VIRGIN ISLANDS REGION          M135 SG132 T113 D75 MA133 Z130 NG75

05 14 05 05 2025  16.8  -94.3 4.0 OAXACA, MEXICO                 M140 SG122 T86 D76 MA115 Z109 NG75

05 14 05 03 2025 -49.6  117.3 4.9 WESTERN INDIAN-ANTARCTIC RIDGE M73 SG17 T61 D73 MA23 Z30 NG135

05 14 04 15 2025 -18.6 -175.3 6.4 TONGA                          M95 SG56 T2 D83 MA42 Z33 NG105

05 14 04 15 2025 -18.6 -175.2 6.9 TONGA                          M95 SG56 T2 D83 MA42 Z33 NG105

05 14 04 13 2025  41.0 -123.7 2.6 NORTHERN CALIFORNIA            M107 SG130 T76 D108 MA117 Z108 NG49

05 14 03 41 2025  38.8 -123.1 2.3 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05 14 03 16 2025  -4.3  102.4 4.8 SOUTHERN SUMATRA, INDONESIA    M26 SG63 T82 D118 MA65 Z68 NG90

05 14 02 48 2025  23.3  120.6 4.0 TAIWAN                         M22 SG87 T77 D145 MA82 Z81 NG62

05 14 02 08 2025  31.6 -104.0 2.5 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 14 01 16 2025  24.3  121.9 4.0 TAIWAN                         M24 SG88 T76 D146 MA83 Z81 NG61

05 14 00 24 2025 -56.7  -68.0 3.6 DRAKE PASSAGE                  M143 SG58 T81 D0 MA64 Z66 NG150

05 13 22 54 2025  39.7   20.0 4.1 KERKIRA REGION, GREECE         M65 SG135 T157 D121 MA146 Z153 NG52

05 13 22 51 2025  35.4   26.9 6.2 CRETE, GREECE                  M60 SG129 T156 D121 MA139 Z146 NG56

05 13 22 51 2025  35.2   27.0 6.0 DODECANESE ISLANDS, GREECE     M60 SG128 T156 D121 MA139 Z146 NG56

05 13 22 07 2025 -17.8 -178.6 4.4 FIJI REGION                    M92 SG55 T5 D85 MA41 Z33 NG104

05 13 20 43 2025  18.8 -107.3 5.9 OFF COAST OF JALISCO, MEXICO   M133 SG118 T75 D82 MA109 Z102 NG73

05 13 19 10 2025  18.6 -106.2 3.6 OFF COAST OF JALISCO, MEXICO   M134 SG119 T76 D81 MA109 Z102 NG73

05 13 18 20 2025  40.2 -110.1 3.1 UTAH                           M113 SG135 T84 D102 MA123 Z115 NG51

05 13 18 01 2025  19.4 -154.8 3.5 HAWAII REGION, HAWAII          M99 SG98 T43 D104 MA84 Z76 NG69

05 13 17 46 2025  48.3 -122.7 2.1 STR. OF JUAN DE FUCA, WASHINGT M101 SG136 T82 D114 MA123 Z114 NG42

05 13 17 17 2025  19.2  -67.8 3.3 DOMINICAN REPUBLIC REGION      M136 SG132 T111 D75 MA132 Z128 NG74

05 13 16 54 2025  -1.6  120.9 4.2 SULAWESI, INDONESIA            M33 SG62 T66 D121 MA59 Z59 NG87

05 13 16 52 2025  27.3  140.1 5.7 BONIN ISLANDS, JAPAN REGION    M40 SG90 T64 D144 MA82 Z78 NG58

05 13 16 52 2025  27.3  140.1 5.5 BONIN ISLANDS, JAPAN REGION    M40 SG90 T64 D144 MA82 Z78 NG58

05 13 16 48 2025   6.9   92.3 4.1 NICOBAR ISLANDS, INDIA REGION  M15 SG77 T95 D127 MA80 Z83 NG80

05 13 16 44 2025  38.4  142.2 4.0 NEAR EAST COAST OF HONSHU,     M42 SG102 T71 D152 MA92 Z88 NG47

05 13 16 16 2025 -16.5  -74.1 3.6 NEAR COAST OF SOUTHERN PERU    M169 SG96 T93 D40 MA98 Z96 NG109

05 13 14 32 2025 -13.4 -111.3 5.1 CENTRAL EAST PACIFIC RISE      M152 SG88 T60 D54 MA81 Z75 NG104

05 13 12 55 2025  40.5 -124.4 2.0 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T76 D107 MA116 Z108 NG50

05 13 12 30 2025   5.8  125.9 4.5 MINDANAO, PHILIPPINES          M33 SG69 T64 D127 MA64 Z63 NG80

05 13 12 12 2025  56.9 -154.8 3.8 KODIAK ISLAND REGION, ALASKA   M81 SG131 T78 D132 MA118 Z109 NG31

05 13 11 15 2025  32.1 -101.9 2.3 WESTERN TEXAS                  M123 SG132 T86 D93 MA122 Z115 NG60

05 13 10 22 2025  40.8   14.1 3.5 SOUTHERN ITALY                 M69 SG139 T158 D119 MA150 Z158 NG51

05 13 10 07 2025  40.8   14.1 4.4 SOUTHERN ITALY                 M69 SG139 T158 D119 MA150 Z158 NG51

05 13 09 18 2025  47.5 -123.4 2.8 OLYMPIC PENINSULA, WASHINGTON  M102 SG135 T81 D113 MA122 Z113 NG43

05 13 07 39 2025  33.0 -117.7 2.1 GULF OF SANTA CATALINA, CALIF. M116 SG126 T75 D98 MA114 Z106 NG58

05 13 07 10 2025 -14.5  -72.2 4.0 CENTRAL PERU                   M166 SG99 T95 D42 MA100 Z99 NG108

 

May 13, 2025

 

Notable Earthquakes

 

It was a relatively quiet day in global seismicity with no quakes of M>5.3.

 

An unusual earthquake of M 5.0-5.1 in southern Argentina today was followed by a series of moderate aftershocks.

 

An unusually large earthquake of M 3.4 was recorded in Illinois today. This is the strongest event in this region since June 17, 2021 and September 18, 2017 - both of M 3.8.

 

An unusual M 4.7 occurred north of Iceland today. It is not associated with current volcanic activity in the area.

 

The full moon arrived on May 12, 2025 at 16:56 UT. Longitudes which are sub-solar (local solar noon) are near 75 West while those at local solar midnight are near 105 East longitude. In the west these include areas of Central America and the Caribbean and the west coast of South America while in the east these areas include western Indonesia, southeast and central Asia. These areas are most likely to see tidal triggering with this full moon.

 

 

SOUTHERN ARGENTINA

 

An earthquake of M 5.0 occurred in extreme southern Argentina today. It was reported by NEIC to have been felt with intensity up to V in the epicentral area and IV in El Calafe, Santa Cruz, Argentina.

This is the strongest earthquake within about 300 km of this epicenter since an

M 5.4 on October 13, 2021 and an M 5.1 on October 30, 2004. At the time of the

event on October 13, 2021, the largest in the area in the past 30 years, this summary noted:

 

 

"The most unusual earthquake of the day was an M 5.4 in southern

Argentina and Chile in Santa Cruz, Argentina.  GUC reported this earthquake was felt with intensity IV in  Magallanes and Antartica, Chilena at Torres del Paine and III in Natales, Chile.

NEIC reported this earthquake of M 5.4 in the southern Argentina-Chile border was felt with intensity II-III in the area(s) of the southern Argentina-Chile border at Rio Gallegos, Santa Cruz, Argentina.

This is the largest earthquake within about 300 km of this epicenter since

an M 5.4-5.5 on July 30, 1992 near this same epicenter. That was the only

earthquake of M>=5.4 in this area located in the past 30 years." (October 13, 2021)

 

Today's epicenter is near the Drake Passage M 7.4 of May 2 (57S 67W) and was probably

triggered by stress redistribution from that event.

 

Forecast 172434 had expected today's event within about 100 km was likely

around May 13.

 

O: 13MAY2025 00:48:00 51.4S  71.9W ML=5.0  NEIC   Southern Argentina        

P: 13MAY2025 172434   52.0S  71.0W 4.0-5.6 ABAAA  Argentina  

 

ILLINOIS

 

An earthquake of M 3.3-3.4 was felt in eastern Illinois today. NEIC reported it with intensity III in Illinois in Urbana, Homer, Charleston and II in Crest Hill, Milford, Champaign and Ashmore. It may have been felt as far as Chicago, Peoria and in Louisville, Kentucky.

It occurred near local solar midnight and may have been promoted by tidal stresses

associated with the full moon about 12 hours earlier on May 12 (see above).

This is the strongest earthquake recorded in Illinois within about 150 km of this epicenter

since an M 3.8 four years ago on June 17, 2021 and prior to that an M 3.8

on September 19, 2017. The last moderate earthquake in the area was an M 5.4 on April 18, 2008.

 

At the time of the June, 2021 event this summary noted:

 

 

"A light to moderate earthquake of M 3.8 in the region of Indiana today continued the enhanced seismicity in the central and eastern U.S. observed over the past three days. Today's event was reported by NEIC with maximum intensity VI in Indiana at Hillsdale; V in Kingman; IV in Dana, Marshall, Rockville, Montezuma and III in Bloomingdale, Cayuga, and in Illinois at Rosedale and Clinton among others. It was reported lighly felt as far as Texas, Massachusetts, Florida, Maine, North Dakota, Minnesota, Ontario Canada along with most of the remaining states and provinces of eastern U.S. and Canada.

The total eclipse of the sun of June 10, 2021 was visible in most of the region where today's event was felt and may have been a promoter of this seismicity as reported in earlier issues of this summary:

 

"The new moon arrives on June 10 at 10:53 UT. Longitudes which are at local solar midnight at this hour include those near 160 West while those at local solar noon are near 20 East longitude. These include areas from the northern Kermadec/Tonga/Samoa arc, Hawaii and Alaska and the Aleutians in the west and Central Europe and Africa in the east. These areas are most likely to see tidal enhancement of seismicity with this new moon. Other areas could also see an increase in seismicity especially near local solar noon and midnight with a moderately strong to major quake possible in the next week. This is an annular solar eclipse. The maximum will be at 80N 66W and will be visible in northern and central Alaska and central and northern Canada. It will end north of Kamchatka, Russia and could trigger a large earthquake or volcanism in that area. In the U.S. it will be partially visible in Central Alaska, North and South Dakota through much of the eastern and northern U.S., Greenland and Canada beginning in the region of the Virgin Islands and Puerto Rico. A strong to major earthquake is likely within several days of this eclipse, most likely in eastern Asia or the Caribbean." (June 8-10, 2021)

 

Today's event in Indiana is the strongest within about 150 km of this epicenter

since an M 3.8 on December 30, 2010 and an M 3.8 on September 12, 2004. The only event

in this region of larger magnitude occurred about 200 km northwest of today's

epicenter on June 28, 2004. The day before this earthquake occurred this summary noted

in this regard:

 

 

"Unusual earthquakes in the interior of the

U.S. or Canada often precede strong earthquakes elsewhere along the western

edge of North America. We have emphasized this in the past and it is always a

possibility that a strong earthquake is possible when a moderate intraplate

earthquake occurs. In the past several days we have been discussing the unusual activity

in the region of the northwest U.S. and southwest Candada. This is probably

the most likely region for such an event should it occur at this time." (June 27, 2004)

 

"The earthquake of Mb 4.1 (Mblg 4.5) that occurred in northern Illinois this

morning several hours before the Alaska earthquake was felt lightly with

light damage from falling objects and cracked plaster. This event was

the strongest in the Chicago area since a moderate event which occurred

nearly 70 years ago on Nov. 12, 1934." (June 29, 2004, June 17, 2021)

 

Forecasts 172037, 172318 had expected a light to moderate quake in this area

of Illinois around May 9-15.

 

O: 13MAY2025 04:43:49 39.4N  88.3W ML=3.4  EMSC   Illinois                  

P: 09MAY2025 172037   38.0N  89.0W 2.0-4.1 BBAAA  New Madrid Area

P: 15MAY2025 172318   38.0N  90.0W 2.0-4.1 BBAAA  New Madrid Area

P: 13MAY2025 172318   39.0N  88.0W 2.0-4.1 AAAAA  New Madrid Area

 

ICELAND

 

An M 4.7 north of Iceland today was reported by NEIC to have been felt with intensity

II in Husavik, Sandoy Faroe Islands.

 

Forecast 172413 had expected enhanced seismicity in this area was likely around May 13, 2025.

 

O: 13MAY2025 04:02:04 66.5N  17.4W ML=4.7  NEIC   North of Iceland          

P: 13MAY2025 172413   65.0N  17.0W 3.0-4.6 ABAAA  Iceland area

 

The strongest earthquake in the world today was an M 5.3 in Hokkaido, Japan. NEIC reported it was felt with intensity II in Miyako, Iwate, Japan.

 

 

NEIC reported an earthquake of M 4.9 in Dodecanese Islands was felt with  intensity up to II-III in the area(s) of Dodecanese Islands with IV in Kiklades, Greece at Thira and Emborion; III in Bursa, Turkdy and II in Kiklades, Greece at Apollonia, Mesaria, Naxos and Paros.

 

NEIC reported  earthquakes of M 4.0 and M 4.1 in Valparaiso, Chile were felt with  intensity up to II-III in the area(s) of Valparaiso, and Santiago, Chile.

 

NEIC reported an earthquake of M 3.3 in Southern Alaska was felt with  intensity up to II-III in the area(s) of Southern Alaska in Anchorage.

 

NEIC reported an earthquake of M 2.7 in Northern California was felt with  intensity up to II-III in the area(s) of Northern California in Middletown.

 

NEIC reported an earthquake of M 5.0 in Southern Peru was felt with  intensity up to II-III in the area(s) of Southern Peru with III in Iquique, Tarapaca, Chile.

EMSC reported light shaking in Chile at Arica, Iquique and Alto Hospicio.

 

NEIC reported an earthquake of M 4.5 in Guatemala was felt with  intensity up to II-III in the area(s) of Guatemala at Antigua Guatemala, Sacatepequez.

 

NEIC reported an earthquake of M 3.1 in Southern Alaska was felt with  intensity up to II-III in the area(s) of Southern Alaska with III in Anchorage and Fort Richardson.

 

NEIC reported earthquake of M 4.3 and M 4.4 in Turkey were felt with  intensity up to II-III in the area(s) of with IV in Amasya.

EMSC reported moderate shaking in Turkey at Haciyahya,Sofular, Mezifon, Copiu, Gulabibey, Mimarsinan, Akbilek, Cumhuriyet, Yenimahalle, Korfez, Mimarsinan, Kilicdede, Asaginohutlu, Haci Bayram.

 

EMSC reported an earthquake of M 4.1 in Kamchatka was felt with  intensity up to IV in the area(s) of Vilyuchinsk, Russia.

 

No Tropical Cyclones are currently active.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

2870       0041   0049      0054   C1.6      (May 12, 2025)   1.2E-03  

Gulf of California M 4.0 00:50 UT

Venezuela M 5.0 00:42 UT

Tonga M 4.6 00:40 UT

 

2900       0541   0548      0552   C1.6      (May 12, 2025)   9.6E-04  

2910       0558   0602      0606   C2.0      (May 12, 2025)   9.0E-04      

South Georgia Is. M 4.9 06:20 UT

 

2940       1152   1159      1202   C1.0      (May 12, 2025)   6.3E-04      

2950       1249   1308      1339   C2.7      (May 12, 2025)   5.3E-04  

2960       1452   1502      1504   C2.7      (May 12, 2025)   1.2E-03  

Hokkaido M 5.3 14:54 UT

Tarapaca M 5.0 14:57 UT

Oaxaca M 4.0 15:04 UT

 

2990       1654   1701      1706   C1.2      (May 12, 2025)   7.5E-04  

Molucca Sea M 5.1 17:01 UT

 

3000       1714   1723      1727   C1.0      (May 12, 2025)   8.1E-04  

Kamchatka M 4.5 17:17 UT

Valparaiso M 3.1 17:33 UT

 

3030       1939   1948      1954   C1.2      (May 12, 2025)   9.5E-04  

Taiwan M 4.0 19:38 UT

 

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:  active May 13 and 15 unsettled May 14.  Solar M-flare chance: 15% X-class: 1% proton storm: 1%

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)     6 10  7 15:00 4   64 116

 

 

A strong Gamma Ray Burst was recorded by SWIFT on May    9, 2025 at 22:33:30 UT (#250509A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the M 6.8 in Macquarie Island region (white stipples).

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05 13 07 10 2025 -14.4  -72.2 4.0 CENTRAL PERU                   M166 SG99 T95 D42 MA100 Z99 NG107

05 13 06 41 2025  22.1   96.3 3.9 MYANMAR                        M0 SG90 T97 D143 MA91 Z93 NG64

05 13 06 13 2025  37.2 -117.1 2.6 NEVADA                         M113 SG130 T78 D102 MA118 Z109 NG54

05 13 05 41 2025   0.7  121.6 4.4 MINAHASA, SULAWESI, INDONESIA  M32 SG65 T66 D123 MA61 Z61 NG85

05 13 05 36 2025  22.0  101.6 3.6 CHINA-LAOS BORDER REGION       M5 SG89 T92 D144 MA88 Z89 NG64

05 13 04 54 2025  15.0  -94.0 4.0 OFFSHORE CHIAPAS, MEXICO       M141 SG120 T85 D74 MA114 Z108 NG77

05 13 04 43 2025  39.4  -88.3 3.4 ILLINOIS                       M118 SG144 T99 D97 MA135 Z128 NG53

05 13 04 13 2025 -19.5 -176.4 4.5 FIJI REGION                    M95 SG54 T2 D83 MA40 Z32 NG106

05 13 04 09 2025  66.5  -17.7 3.6 ICELAND REGION                 M78 SG168 T131 D128 MA167 Z161 NG27

05 13 04 02 2025  66.5  -17.6 4.7 ICELAND REGION                 M78 SG168 T131 D128 MA167 Z161 NG27

05 13 03 55 2025  37.9 -122.2 2.3 SAN FRANCISCO BAY AREA, CALIF. M110 SG128 T75 D104 MA115 Z107 NG53

05 13 03 42 2025 -56.8  -68.7 3.3 DRAKE PASSAGE                  M143 SG58 T81 D0 MA63 Z66 NG150

05 13 03 27 2025  22.4  -99.4 3.9 SAN LUIS POTOSI, MEXICO        M133 SG125 T84 D83 MA116 Z109 NG70

05 13 02 45 2025  22.2  -99.1 3.8 SAN LUIS POTOSI, MEXICO        M133 SG125 T84 D82 MA116 Z110 NG70

05 13 02 19 2025 -51.4  -72.1 3.9 SANTA CRUZ, ARGENTINA          M149 SG63 T81 D5 MA67 Z69 NG144

05 13 01 38 2025  36.3 -120.9 2.6 CENTRAL CALIFORNIA             M112 SG127 T75 D102 MA115 Z106 NG54

05 13 01 37 2025  37.1  140.5 4.8 EASTERN HONSHU, JAPAN          M41 SG100 T71 D152 MA91 Z87 NG48

05 13 01 30 2025  51.8 -175.0 4.2 ANDREANOF ISLANDS, ALEUTIAN IS M72 SG121 T71 D138 MA108 Z101 NG35

05 13 00 48 2025 -51.4  -72.0 5.1 SANTA CRUZ, ARGENTINA          M149 SG63 T81 D5 MA67 Z69 NG144

05 13 00 02 2025  -9.6  107.1 4.0 SOUTH OF JAVA, INDONESIA       M33 SG57 T76 D113 MA58 Z61 NG95

05 13 00 01 2025  30.9   99.0 4.3 EASTERN XIZANG                 M9 SG98 T97 D152 MA97 Z98 NG56

05 12 23 52 2025  56.9 -154.9 3.6 KODIAK ISLAND REGION, ALASKA   M81 SG131 T78 D132 MA118 Z109 NG31

05 12 23 30 2025  36.6   25.7 4.9 DODECANESE ISLANDS, GREECE     M61 SG130 T156 D121 MA141 Z148 NG55

05 12 23 20 2025  38.2 -117.9 2.2 NEVADA                         M112 SG130 T78 D103 MA118 Z109 NG53

05 12 23 17 2025  31.7 -104.4 2.1 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 12 23 12 2025  -6.1  151.7 4.9 NEW BRITAIN REGION, P.N.G.     M61 SG58 T36 D109 MA48 Z43 NG91

05 12 23 08 2025 -32.6  -71.1 4.0 VALPARAISO, CHILE              M164 SG81 T89 D24 MA84 Z85 NG126

05 12 22 15 2025  18.2  -67.3 3.3 MONA PASSAGE, PUERTO RICO      M136 SG131 T111 D74 MA131 Z128 NG75

05 12 22 02 2025  57.0 -154.7 3.3 KODIAK ISLAND REGION, ALASKA   M81 SG131 T78 D132 MA118 Z110 NG31

05 12 21 33 2025  42.6  142.0 4.5 HOKKAIDO, JAPAN REGION         M43 SG106 T74 D156 MA97 Z92 NG43

05 12 21 30 2025 -24.0  -67.0 4.4 SALTA, ARGENTINA               M164 SG90 T96 D32 MA94 Z94 NG117

05 12 20 58 2025  33.3 -116.4 2.2 SOUTHERN CALIFORNIA            M116 SG127 T76 D98 MA115 Z107 NG58

05 12 20 10 2025  30.6 -117.1 3.6 OFFSHORE BAJA CALIFORNIA, MEXI M118 SG124 T74 D96 MA113 Z104 NG60

05 12 19 37 2025  23.0  121.4 4.0 TAIWAN REGION                  M23 SG87 T76 D145 MA82 Z80 NG63

05 12 18 32 2025  19.1  -66.1 3.3 PUERTO RICO REGION             M135 SG133 T112 D75 MA132 Z129 NG74

05 12 18 16 2025  32.0 -102.2 2.0 WESTERN TEXAS                  M123 SG132 T86 D93 MA122 Z114 NG60

05 12 17 35 2025  61.0 -147.5 3.3 SOUTHERN ALASKA                M82 SG137 T83 D132 MA123 Z115 NG28

05 12 17 33 2025 -33.7  -72.2 4.1 OFFSHORE VALPARAISO, CHILE     M164 SG80 T88 D23 MA83 Z83 NG127

05 12 17 17 2025  53.1  159.3 4.5 NEAR EAST COAST OF KAMCHATKA   M56 SG118 T76 D152 MA106 Z101 NG33

05 12 17 01 2025   2.1  126.7 5.1 MOLUCCA SEA                    M35 SG66 T62 D124 MA60 Z60 NG83

05 12 16 23 2025  -7.4  128.9 4.1 KEPULAUAN BARAT DAYA, INDONESI M43 SG56 T56 D114 MA51 Z50 NG93

05 12 16 01 2025  65.0 -134.1 2.9 NORTHERN YUKON TERRITORY, CANA M85 SG144 T90 D131 MA130 Z122 NG25

05 12 15 40 2025  -2.3  100.8 4.3 KEP. MENTAWAI REGION, INDONESI M24 SG66 T84 D120 MA67 Z71 NG88

05 12 15 14 2025  38.8 -122.7 2.7 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05 12 15 04 2025  15.9  -96.3 4.0 OAXACA, MEXICO                 M140 SG120 T84 D76 MA113 Z107 NG76

05 12 14 59 2025 -57.3  -67.5 3.6 DRAKE PASSAGE                  M142 SG57 T81 D0 MA63 Z66 NG150

05 12 14 57 2025 -18.3  -69.3 5.0 TARAPACA, CHILE                M165 SG95 T96 D38 MA98 Z97 NG111

05 12 14 54 2025  41.6  142.1 5.3 HOKKAIDO, JAPAN REGION         M43 SG105 T73 D155 MA96 Z91 NG44

05 12 14 34 2025 -24.9 -176.5 4.7 SOUTH OF FIJI ISLANDS          M96 SG49 T5 D78 MA36 Z27 NG111

05 12 14 34 2025  13.8  -90.9 4.5 OFFSHORE GUATEMALA             M143 SG120 T88 D72 MA115 Z109 NG79

05 12 13 43 2025  36.3  -89.5 2.4 TENNESSEE                      M121 SG141 T97 D94 MA132 Z125 NG56

05 12 12 06 2025  36.9 -117.8 1.9 CENTRAL CALIFORNIA             M113 SG129 T77 D102 MA117 Z108 NG54

05 12 11 53 2025  32.1 -102.1 2.0 WESTERN TEXAS                  M123 SG132 T86 D93 MA122 Z114 NG60

05 12 11 51 2025  34.0 -116.0 2.3 SOUTHERN CALIFORNIA            M116 SG128 T77 D99 MA116 Z107 NG57

05 12 11 14 2025  32.1 -102.2 2.1 WESTERN TEXAS                  M123 SG132 T86 D93 MA122 Z114 NG60

05 12 10 26 2025  33.5 -116.4 2.3 SOUTHERN CALIFORNIA            M116 SG127 T76 D98 MA115 Z107 NG57

05 12 10 16 2025  25.2  -99.7 3.7 NUEVO LEON, MEXICO             M130 SG127 T85 D85 MA118 Z111 NG67

05 12 09 28 2025  61.5 -149.4 3.1 SOUTHERN ALASKA                M81 SG137 T83 D133 MA123 Z115 NG27

05 12 09 26 2025  40.8   35.2 4.4 CENTRAL TURKEY                 M54 SG129 T147 D129 MA138 Z143 NG50

05 12 09 26 2025  19.4  -66.3 3.2 PUERTO RICO REGION             M135 SG133 T112 D75 MA133 Z129 NG74

05 12 09 23 2025  40.8   35.2 4.3 CENTRAL TURKEY                 M54 SG129 T147 D129 MA138 Z143 NG50

05 12 09 21 2025  25.2  -99.7 3.5 NUEVO LEON, MEXICO             M130 SG127 T85 D85 MA118 Z111 NG67

05 12 09 15 2025 -21.5  -69.2 4.1 ANTOFAGASTA, CHILE             M166 SG92 T95 D35 MA95 Z95 NG115

05 12 08 29 2025  19.1  -67.9 3.6 DOMINICAN REPUBLIC REGION      M136 SG132 T110 D75 MA132 Z128 NG74

05 12 08 09 2025  36.6  -89.6 2.1 SOUTHEASTERN MISSOURI          M121 SG141 T97 D94 MA133 Z125 NG56

05 12 08 03 2025   3.7   96.8 3.8 NORTHERN SUMATRA, INDONESIA    M18 SG73 T90 D125 MA75 Z78 NG83

05 12 07 56 2025  29.1   66.6 4.6 PAKISTAN                       M27 SG106 T124 D137 MA112 Z116 NG59

05 12 07 53 2025  35.9  -92.9 2.2 ARKANSAS                       M121 SG139 T94 D94 MA130 Z123 NG57

05 12 07 42 2025  37.2 -118.3 2.7 CENTRAL CALIFORNIA             M112 SG129 T77 D102 MA117 Z108 NG54

05 12 07 35 2025  12.9  -91.1 4.1 OFF THE COAST OF GUATEMALA     M144 SG119 T87 D72 MA114 Z108 NG79

05 12 07 12 2025  19.3  -64.9 3.4 VIRGIN ISLANDS REGION          M134 SG133 T113 D75 MA133 Z130 NG74

05 12 07 07 2025  17.9  -66.8 3.1 PUERTO RICO REGION             M136 SG131 T111 D74 MA131 Z128 NG76

 

 

 

May 12, 2025

 

Notable earthquakes:

 

An earthquake of M 5.6 hit Xizang, China (Tibet) today. Damage was expected in the epicentral area.

This earthquake location was consistent with tidal triggering with today's full moon. (See below for forecast)

 

An earthquake of M 5.9 also occurred today in the region of Vanuatu. It was felt in the Port-Vila and Epule.

 

An earthquake of M 5.8 hit the region of northern Sumatra today. This is consistent with tidal triggering with the full moon of May 12, 2025 as previously noted in this summary:

This event is antipodal to the series of quakes in Ecuador yesterday (see previous issue of this summary for details).

 

The full moon of May 12 may bring the current lull in global seismicity to a halt. Expected enhanced seismicity is expected as:

 

The full moon will arrive on May 12, 2025 at 16:56 UT. Longitudes which are sub-solar (local solar noon) are near 75 West while those at local solar midnight are near 105 East longitude. In the west these include areas of Central America and the Caribbean and the west coast of South America while in the east these areas include western Indonesia, southeast and central Asia. These areas are most likely to see tidal triggering with this full moon.

 

Tropical Cyclone 32P could enhance seismicity in New Guinea and at the antipode in the Central mid-Atlantic Ridge.

 

XIZANG (TIBET), CHINA

 

An earthquake M 5.6-5.7 occurred in Xizang, China today. NEIC reported it was probably felt with intensity up to VIII in the epicentral

area with III in Nepal at Khadbari, Sankhuwasabha and II in Bhimeshwar and II in Shiliguri, Bangla, India.

This is the strongest earthquake within about 200 km of this epicenter in Xizang

since an M 7.1 about 200 km to the west of this epicenter on January 7, 2025 and

the strongest within about 150 km since an M 5.9 on August 25, 1998.

At the time of the January 8, 2025 event this summary noted:

 

 

"A major earthquake of M 7.0 occurred in Nepal and Xizang, China (Tibet) today. It was felt widely from Xizang, China to Nepal to India. NEIC reported maximum intensity VI in Bangla and Bihar, India at Islampur and Munger and V at Baharampur, Kalimpong, Dinapur, Koilwar, Motihari, Raxaul, Samastipur, in Nepal with intensity V in Bhimeshwar, Mechinagar, Banepa, Butwal; with IV in Bangladesh at Sherpur, Nawabganj, Narayanganj, Rangpur, Rajshahi; in Bhutan at Phuentsholing, among others.

EMSC reported strong shaking in Nepal at Kathmandu, Malangwa, and in India at Majorganj, Jaygaon, Nyoti Nagar, Bairatisal, West Ashrampara, Arbinda Pally, Jalpaiguri, Paljor Stadium area, Namchi, Sikkim, India, Darjeeling, Kalimpong, Siliguri, among others.

Initial reports indicate that more than 95 people were killed in the earthquake with at least 130 injured. AP reported major damage of the Tibetan holy city of Shigatse.

At least 1000 homes were damaged. The epicenter is about 75 km from Mount Everest,

the tallest mountain in the world. Operations at that location have ceased for the

immediate threats of aftershocks or landslides related to today's event. Minor damage was initially reported confined to areas of southern Xizang, China and Nepal.

Videos on the internet show some damage in these areas. The mainshock was followed by a series of moderate aftershocks which NEIC reported

were felt with moderate to strong intensity (V) in Kathmandu, Nepal.

 

A light M 3.9 foreshock hit this area of Nepal on January 3, 2025 and was noted in this summary at the time as:

 

"EMSC reported an earthquake of M 3.9 in Nepal was felt with  intensity up to IV in the area(s) of Nepal at Kathmandu." (January 3, 2025)

 

These epicenters are at the fourth node (90 degrees) from the M 7.4 in Vanuatu of December 17, 2024

and were in an area where enhanced seismicity after that quake was expected

in this summary on December 17 as:

 

...

 

The last earthquake of M>=6.5 within about 300 km of today's epicenter occurred

as an M 7.3 on May 12, 2015 - a regional aftershock of an M 7.8 of April 25, 2015.

At the time this summary noted:

 

 

"The strong earthquake of M 7.2 in Nepal was widely felt in the region. This

report noted in the previous issue in regard to the possibility of a strong

aftershock in Nepal at this time:

 

"The great earthquake in Nepal of April 25 occurred half a lunar month ago.

In many areas tidal forces are maximized at 14-15 day intervals and can

help trigger large aftershocks at that time. A strong aftershock in Nepal

is overdue after a series of quiet days in that region. There were some

moderate events in the area today leading to speculation that a larger earthquake

may be imminent. The death toll from the mainshock is over 8000 now and

many buildings are damaged and could collapse in a major aftershock.

As the migration of major earthquakes at the fifth node from Nepal (72 degrees)

in the New Britain area has been moving to the east as noted in previous issues of this report,

a strong aftershock in Nepal would also likely be 100-200 km east of the

April 25 mainshock." (April 11-12, 2015)

 

The earthquake in Nepal of M 7.2 brought fresh death and destruction to that

country. Initial deaths are listed at 65 in Nepal and 17 more in India with the latest event and more than

8000 from the mainshock. In addition more than 2000 more were injured in

today's aftershock and scores of buildings collapsed after being weakened

in the mainshock. Most of the casualties were listed in Dolakha district north of

Kathmandu. The quake was centered near Mt. Everest and was followed by at

least 17 moderate aftershocks including an M 6.2. Landslides caused additional

destruction. At least one aid helicopter was missing and presumed down. Flights

to Kathmandu were diverted for most of the day. Schools remained closed probably

for another two weeks. The quake was felt throughout Nepal, in Pakistan, Bihar,

northern India and China where at least one person was killed in Tibel.

The quake occurred shortly after local solar noon and was probably promoted

by tidal stresses as was the mainshock two weeks ago (occurred minutes before

local solar noon). Today's aftershock is about 150 km to the east of the

mainshock of April 25 and affected a slightly different population." (May 12, 2015)

 

The last earthquake to hit within about 150 km of today's epicenter with M>=6.5

occurred as an M 6.9 on September 18, 2011." (January 7, 2025)

 

This earthquake in Xizang occurred near local solar midnight and may have been

promoted by tidal and/or geomagnetic effects associated with solar flares and

the full moon of May 12.

 

Today's event in Xizang, China today of M 5.6-5.7 was at 147 degrees (node 5) from the Drake Passage

event of May 2, 2025 and may have been promoted by energy from that source.

Earthquakes of M 4.9 in Taiwan and an M 5.3 in northeastern Russia today were at this same distance from the Drake Passage.

This epicenter is also at 102-103 degrees from the M 6.8 in New Zealand of March 25 and

the M 6.8 in the Macquarie Islands of April 29, and may have been promoted by energy from these sources as well.

 

Forecast 172079 had expected this activity in Xizang was likely in early May, 2025.

 

O: 11MAY2025 21:11:23 29.0N  87.6E ML=5.6  EMSC   Western Xizang

O: 11MAY2025 21:11:23 29.0N  87.5E ML=5.7  NDI    Western Xizang

P: 02MAY2025 172079   31.0N  88.0E 3.8-5.3 CBAAA  Xizang       

 

 

VANUATU

 

A strong M 5.9-6.3 earthquake occurred today in southern Vanuatu. NEIC reported it was felt with intensity up to VI in Vanuatu with moderate intensity V reported in Vanuatu at Vile Shefa; IV inLuganville, Sanma and II in New Caledonia at Noumea and Welles.

An aftershock of M 4.7 was also felt with intensity II in Vila Shefa.

The last earthquake of M>=5.9 in Vanuatu within about 200 km of today's epicenter

was an M 5.9 on February 10, 2025 - an aftershock of the M 7.3 in Vanuatu

on December 17, 2024. At the time this summary noted:

 

"An M 7.3-7.4 earthquake hit the area of southern Vanuatu today. NEIC reported extensive damage and intensity up to IX at Isangel, Tafea and VIII in Vila Shefa, Vanuatu. Lesser intensities of IV were felt in New Caledonia at Bouloupari and II in Dumbea, Noumea and Paita.

The earthquake damaged buildings and cars and killed at least one person in the capital of Vanuatu - Port Vila. Some

people were trapped in collapsed building, some of which fell on vehicles and

sidewalks filled with Christmas vendors. A number were injured and roads leading to the port and

shipping terminal were closed due to landslides. Video and pictures on

the web showed considerately damage to U.S., French, New Zealand and British embassies.

most of which were closed after the quake. Communications was out throughout

most of Vanuatu and casualties are expected to rise. An M 5.5 aftershock followed. EMSC reported the M 7.4 was felt with

intensity III in Noumea, and Tadine New Caledonia south of Vanuatu. A tsunami was considered likely

with this event but a warning was dropped several hours later when only small

tsunami waves were observed. This earthquake is located near

the fourth node (90 degrees) from the M 7.0 off Northern California of

December 5 and may have been promoted by far-field effects from that source. Other

unusual earthquakes in the past several days at the fourth node from the M 7.0

in Northern California have occurred as an M 6.4 in Maule, Chile and an M 4.9-5.0

yesterday in northern Algeria. An unusual M 5.2 also occurred near the fourth

node from California today in the Central Mid-Atlantic Ridge. This summary had expected enhanced seismicity

near 90 degrees after the California quake was likely among others at:

 

"Far field seismicity is generally enhanced at nodal distances near 360/n degrees

where n is a small integer. At the time of the California event this summary noted the possibility of

an extensive far-field aftershock series as:

 

...

 

Node 4 (90 degrees)

Coast of Northern California to Algeria, New Guinea, Romania, Kermadec Is. New Ireland, Algeria, Central Chile, Spain, Taiwan, Algeria, Morocco, China, Bismarck Sea, Serbia, New Guinea, Central Mid-Atlantic" (December 5, 2024)

 

 

It also occurred near local solar noon and may have been promoted by tidal

stresses with the full moon of December 15, 2024.

 

...

 

Today's event of M 7.4 is the strongest within about 400 km in Vanuatu  since

an M 7.5 on November 26, 1999 and an M 7.4 on October 11, 1992 - an event

that followed several months after an M 7.1 off northern California of April 25, 1992." (December 17, 2024)

 

This earthquake in Vanuatu occurred near local solar midnight and may have been

promoted by tidal and/or geomagnetic effects associated with solar flares and

the full moon of May 12. The expected tidal effects of the full moon were

previously identified in this summary as:

 

"The full moon will arrive on May 12, 2025 at 16:56 UT. Longitudes which are sub-solar (local solar noon) are near 75 West while those at local solar midnight are near 105 East longitude. In the west these include areas of Central America and the Caribbean and the west coast of South America while in the east these areas include western Indonesia, southeast and central Asia. These areas are most likely to see tidal triggering with this full moon." (May 9-11, 2025)

 

The M 5.9-6.3 in Vanuatu today was located at the fourth node (90 degrees) from the Drake Passage M 7.4 of

May 2 and from the M 7.1 in Xizang of January 7, 2025 and may have been promoted

by energy from those sources. Other earthquakes at the fourth node from the

Drake Passage today occurred in Texas, the Gulf of California, and New South Wales,

Australia.

 

 

This earthquake in Vanuatu ccurred at the end of solar flare 2700 (C2.6)

and may have been promoted by SFE from that flare. Data from SWPC for this flare follow:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

2700       1125   1130      1135   C2.6      (May 11, 2025)   1.6E-03  

Vanuatu M 5.9 11:22 UT

Primor'ye Russia M 4.6 11:39 UT

 

Forecast 171886 had expected this activity in Vanuatu was likely around May 5.

 

O: 11MAY2025 11:22:22 17.7S 168.3E ML=5.9  EMSC   Vanuatu

O: 11MAY2025 11:22:22 17.7S 168.3E ML=6.3  GEONET Vanuatu

P: 05MAY2025 171886   17.0S 168.0E 4.0-5.6 BCCAA  Vanuatu Islands

 

NORTHERN SUMATRA

 

An M 5.8-6.0 earthquake struck the region of northern Sumatra today. NEIC reported

it was felt with intensity VII in Aceh, Indonesia at Lhokseumawe and Meulaboh with III in Medan, Sumatra and in Thailand and Malaysia.

EMSC reported moderate shaking at Namo Rambe, Medan Labuhan, and in Tailand at Ko Sarai, in Malaysia at Balik Pulau, Kampung Sungai Dua Bukit, Pulau Jerejak, Mukim, Air Hitam, Georgetown, Air Hitam, Sitiawan, Perak Sitiawan, Kampung Bagan Serai and in Thailand at Rawai, Chalong, TTDI Jaya, Petaling, and as far as Kuala Lumpur.

 

Today's event in Sumatra occurred near local solar noon and may have been

promoted by geomagnetic and/or tidal stresses associated with solar flares

and the full moon of May 12.

 

This earthquake in Sumatra follows a strong sequence yesterday at the antipode

on the Peru-Ecuador border. At the time this summary noted it as:

 

"The antipode of today's activity in Ecuador is in Sumatra near 4N 99E. Moderate

enhancement of seismicity could occur near this epicenter Sumatra in the next several days.

Following the great M 9.0 earthquake of December 26, 2004, this relationship

between Sumatra and Ecuador earthquakes was emphasized in this summary twenty

years ago in May, 2005 as:

 

 

"An earthquake measuring M 6.1 occurred today in the region near the Peru-Ecuador

border. It was followed later in the day by a strong earthquake in the Sumatra/

Nicobar Islands with M 5.5-6.5. Data on the NEIC website indicated that the Ecuador

quake was reported felt with maximum intensity IV about 150 km from the epicenter in the city of Guayaquil,

Ecuador. It was also reported felt more than 400 km to the north in Quito,

Ecuador. There were no immediate reports of damage or injuries. In neighboring Colombia,

officials have raised the volcanic alert on Galeras Volcano to level two meaning

an eruption could occur within days or weeks at that Volcano.

The earthquake epicenter is within about 200 km of the exact antipode of

the M 6.7-6.9 event in the Sibolga, Sumatra area of Indonesia which

occurred two days ago on May 19. This was one of only three aftershocks of

the M 9.3 quake in the region which have had magnitudes of M>=6.9 (EMSC data).

When that event occurred we noted the relation to the Peru-Ecuador-Colombia

seismicity when we stated in this summary: "A series of events in the antipodal

region of Peru, Ecuador and Colombia also occurred over the past day.

The most interesting of these in terms of possible triggering occurred

within about 200 km of the exact antipode of today's Nias event of M 6.9

about 30 minutes prior to the Nias event with M 4.5." (geoForecaster Inc.

May 19, 2005). We have discussed this antipodal relationship in several previous

summaries during the past five months." (May 22, 2005)

 

A moderate M 3.9 occurred near the antipode of Ecuador today in northern Sumatra and may be

a foreshock to a coming regional event. Parameters for this event follow:

 

O: 10MAY2025 07:19:42  4.5N  95.3E ML=3.9  EMSC   NORTHERN SUMATRA, INDONESIA

(May 11, 2025)

 

The last earthquake in Sumatra within about 200 km of today's activity with M>=6 ws an

M 6.2 on January 15, 2023. At the time this summary noted:

 

"An M 6.2 also occurred today in northern Sumatra, Indonesia. NEIC reported it was felt with intensity IV in Sumatra at Sibolga, Gunung and Kabanjahe and III in Pematang Siantar.

BMG reported intensity V in Aceh Singkil and Manado; IV in Aceh Selatan, Subulussalam, Tapandi Tengah, Nias, Deli Serdang, Pakpak Bharat, Gunungsitoli, Rokan Hilir and III in Aceh Tenggara, Timur, Simeulue, Barat Daya, Subulussalam, among others.

This is the strongest earthquake within about 200 km of this epicenter since an

M 6.7 on September 5, 2011. Subsequent activity at this magnitude level has

occurred about 250-300 km to the west of today's epicenter. The only event of M>6.2 

in that region in the past 10 years was an M 6.6  on May 14, 2021 about

300 km southwest of today's epicenter. At the time this summary noted:

 

 

"The strongest earthquake in the world today was an M 6.6 in Southern Sumatra in the Nias region of Indonesia. NEIC reported it was felt with intensity VI in Sunung, IV in Kuala Lumpur, Malaysia and II-III in Sumatra at Sibolga, Padang, and in Malaysia at Georgetown and Singapore.

The regional network, ...  This earthquake occurred near local solar noon and near the longitude of maximum

tidal stress with the current new moon ...

 

This event was also probably enhanced by geomagnetic stresses associated with

the geomagnetic storm of May 12-13, the strongest in more than a year. This had

also been noted in the previous issues of this summary:

 

"A third factor which probably enhanced global seismicity today was a strong

geomagnetic storm which began about the time of M 6.7 in the Mauritius-Reunion

area (about 14:00 UT). Most of the strong activity today occurred near the geomagnetic

equator or at high latitude as expected with strong geomagnetic triggering. As described in this summary, this storm is the

strongest recorded since September 1, 2019:

 

"The geomagnetic field saw stormy conditions today. The AP level was 41.  High latitude geomagnetic field also saw strong storm conditions with AP 47. Strong, sudden commencement storms such as this can enhance seismicity especially near the geomagnetic equator or near the polar auroral regions. This is the strongest geomagnetic storm since AP reached 45 on September 1, 2019 more than 1.5 years ago.." (May 12-13, 2021)

 

Today's earthquake in the Nias area of Indonesia is the strongest in more

than 30 years. An M 6.8 was recorded about 300 km to the southwest of today's

epicenteron October 15, 1990. The only earthquake of M>=5.6 in the area

since 1990 was an M 5.9 on June 12, 2018. The antipode to today's event is in Ecuador

at 0N 83W, and may see enhanced antipodal seismicity in the next several days." (May 14, 2021, January 16, 2023).

 

 

The M 5.8-6.0 in Northern Sumatra today was located at the fourth node (90 degrees) from the M 7.1

in Tonga of March 30, 2025 and may have been promoted by energy from those

sources.

 

Today's event in Northern Sumatra occurred at the end of solar flare 2660 and

may have been promoted by SFE associated with that flare. Data from SWPC for this flare follow:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

2660       0843   0850      0854   C1.3      (May 11, 2025)   8.2E-04  

Northern Sumatra M 5.8 08:57 UT

 

 

Forecasts 171951 (among others) had expected this activity in Sumatra was likely

around May 8, 2025.

 

O: 12MAY2025 03:09:38  1.1N  98.9E ML=4.9  BMG    Northern Sumatra, Indonesia

O: 11MAY2025 08:57:44  3.7N  97.0E ML=5.8  EMSC   Northern Sumatra, Indonesia

O: 11MAY2025 08:57:44  3.9N  96.9E ML=6.2  BMG    Northern Sumatra, Indonesia

P: 08MAY2025 171951    1.0N  98.0E 4.0-5.4 BCCAA  So. Sumatra

 

The strongest earthquake in the U.S. or Canada today was an M 4.4 in Unalaska, Alaska. NEIC reported it was felt in Unalaska with intensity III.

 

An earthquake of M 2.8 occurred in Kentucky today. NEIC reported it was felt with intensity II-III in Kentucky at Lancaster, Nocholasville, Lexington, Lawrenceburg, Brodhead, Georgetown, Louisville; als felt in Portsvouth, Ohio, Gallatin, Kingsport, Clarksville and in North Carolina and Georgia.

 

NEIC reported an M 5.0 in Venezuela today was felt with maximum intensity V in Trinidad and Tobago at Tunapuna, and Mucurapo Diego Martin and in Saint Davids, Grenada with III in Chaguanas, Port of Spain, San Fernmando, Tacarigua, and in Grenada at Grenville, Saint Andreww and Saint George with II in Arima and Tabaquite, Trinidad and Tobago.

 

NEIC reported an aftershock of M 4.5 in Venezuela was felt with  intensity up to II-III in the area(s) of Venezuela with II in Mucurapo Diego Martin, Trinidad and Tobago and in Saint George, Grenada.

 

NEIC reported an earthquake of M 5.0 in Kyrgyzstan was felt with  intensity up to II-III in the area(s) of Kyrgyzstan at Biskek.

EMSC reported moderate intensity in Bishkek, Rayymbek, Kyrgyzstan and in Kazakshstan at Rayymbek, Almaty, Alatau and in Tashkent, Uzbekistan.

 

NEIC reported an earthquake of M 2.8 in Northern California was felt with  intensity up to II-III in the area(s) of Northern California at Potter Valley.

 

NEIC reported an earthquake of M 2.8 in Oklahoma was felt with  intensity up to II-III in the area(s) of Oklahoma with III in Prague and Paden.

 

NEIC reported an earthquake of M 2.5 in Ohio was felt with  intensity up to II-III in the area(s) of Ohio with IV in Strongsville and Middletown and III in Geneva, Madison, Rock Creek, Thompson and in Alden New York. Also felt as far as Vermont with intensity II.

 

NEIC reported an earthquake of M 4.3 in Northern Mexico was felt with  intensity up to II-III in the area(s) of Northern Mexico in Nuevo Leon at Apodaca and III in Allende, Garza, Guadalupe, Juarez and in Coahuila, Mexico at Saltillo, Ramos Arizpe and in Rio Grande City, Texas.

 

 

NEIC reported an earthquake of M 2.5 in British Columbia was felt with  intensity up to II-III in the area(s) of British Columbia at Victoria and Nanaimo.

 

NEIC reported an earthquake of M 4.2 in Romania was felt with  intensity up to II-III in the area(s) of Romania at Galati.

EMSC reported moderate shaking in Romania at Focsani, Satu Nou, Gura Saratii, Buzau, Faurei, Campina, Bacau, Balad, Fantanele, Galati, Braila, Bucuresti, Tulcea, and in Moldova at Cahul among others.

 

NEIC reported an earthquake of M 4.6 in Colombia was felt with  intensity up to II-III in the area(s) of Colombia at Bucaramanga, Santander.

 

NEIC reported an earthquake of M 2.9 in Western Texas was felt with  intensity up to II-III in the area(s) of Western Texas in Midland.

 

 

No Tropical Cyclones are currently active.

 

A tropical cyclone may be forming south of Papua New Guinea. This system is currently

located at 8S 137E and tracking to the south with winds up to 33 kts. Some enhanced seismicity in New Guinea is possible as this storm is in the region. The antipode is at 8N 43W in the Central Mid-Atlantic Ridge where a moderate earthquake occurred yesterday, an event that may have been promoted by energy from this storm.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

2590       0002   0009      0013   C1.2      (May 11, 2025)   7.2E-04  

2600       0049   0054      0057   C1.0      (May 11, 2025)   3.8E-04  

Fiji M 4.6 00:49 UT

 

2610       0117   0121      0129   C1.2      (May 11, 2025)   9.3E-04  

Ecuador M 4.7 01:29 UT

 

2620       0408   0418      0424   C1.6      (May 11, 2025)   1.2E-03  

2650       0730   0739      0746   C2.1      (May 11, 2025)   5.6E-04  

Alaska Peninsula M 4.0 07:45 UT

 

2660       0843   0850      0854   C1.3      (May 11, 2025)   8.2E-04  

Northern Sumatra M 5.8 08:57 UT

 

2680       1052   1059      1102   C1.3      (May 11, 2025)   1.1E-03  

2690       1102   1115      1120   C3.2      (May 11, 2025)   7.9E-04   

2700       1125   1130      1135   C2.6      (May 11, 2025)   1.6E-03  

Vanuatu M 5.9 11:22 UT

Primor'ye Russia M 4.6 11:39 UT

 

2740       1412   1419      1426   C1.3      (May 11, 2025)   5.7E-04      

2750       1452   1501      1510   C3.8      (May 11, 2025)   6.8E-04  

2770       1607   1617      1621   C2.6      (May 11, 2025)   1.6E-03  

2800       1816   1820      1824   C1.3      (May 11, 2025)   6.5E-04  

Ecuador M 3.7 18:20 UT

Sumatra M 3.2 18:18 UT

Romania M 4.2 18:34 UT

 

2830       2020   2028      2031   C1.1      (May 11, 2025)   7.7E-04  

2840       2129   2152      2205   C2.3      (May 11, 2025)   4.0E-03      

Chukotka, Russia M 5.3 21:50 UT

Tonga M 5.4 22:04 UT

Mindanao M 4.0 21:37 UT

 

2850       2334   2344      2348   C5.1      (May 11, 2025)   6.4E-04      

Myanmar M 4.0 23:42 UT

 

2860       2355   0001      0006   M1.9      (May 11, 2025)   8.7E-03  

Tonga M 4.8 00:40 UT

Venezuela M 5.0 00:41 UT

Gulf of California M 4.0 00:50 UT

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:  active May 13 unsettled May 12 and 14.  Solar M-flare chance: 1% X-class: 1% proton storm: 1%

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)    15 24 11 15:00 5   77 126

 

 

A strong Gamma Ray Burst was recorded by SWIFT on May    9, 2025 at 22:33:30 UT (#250509A).  A preliminary UVOT Magnitude was not assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the M 6.8 in Macquarie Island region (white stipples).

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05 12 09 28 2025  61.5 -149.3 3.2 SOUTHERN ALASKA                M81 SG137 T83 D133 MA123 Z115 NG27

05 12 09 26 2025  40.8   35.2 4.4 CENTRAL TURKEY                 M54 SG129 T147 D129 MA138 Z143 NG50

05 12 09 23 2025  40.8   35.2 4.5 CENTRAL TURKEY                 M54 SG129 T147 D129 MA138 Z143 NG50

05 12 09 15 2025 -21.5  -69.2 4.1 ANTOFAGASTA, CHILE             M166 SG92 T95 D35 MA95 Z95 NG115

05 12 08 29 2025  19.1  -67.9 3.6 DOMINICAN REPUBLIC REGION      M136 SG132 T110 D75 MA132 Z128 NG74

05 12 07 56 2025  29.1   66.6 4.6 PAKISTAN                       M27 SG106 T124 D137 MA112 Z116 NG59

05 12 07 42 2025  37.2 -118.3 2.7 CENTRAL CALIFORNIA             M112 SG129 T77 D102 MA117 Z108 NG54

05 12 07 12 2025  19.3  -64.9 3.4 VIRGIN ISLANDS REGION          M134 SG133 T113 D75 MA133 Z130 NG74

05 12 06 49 2025  11.0  -62.4 4.5 OFFSHORE SUCRE, VENEZUELA      M140 SG125 T113 D67 MA127 Z125 NG83

05 12 06 38 2025  41.5   74.9 5.0 KYRGYZSTAN                     M26 SG115 T118 D151 MA117 Z119 NG46

05 12 06 20 2025 -55.0  -32.4 4.9 SOUTH GEORGIA ISLAND REGION    M129 SG61 T98 D19 MA71 Z76 NG149

05 12 05 36 2025  62.7  178.5 4.6 NEAR S COAST OF CHUKOTKA,      M67 SG130 T82 D147 MA117 Z111 NG24

05 12 05 21 2025  31.6 -104.3 2.3 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05 12 04 25 2025  39.5 -123.1 2.8 NORTHERN CALIFORNIA            M108 SG129 T76 D106 MA116 Z108 NG51

05 12 03 48 2025  18.6  -65.1 3.1 VIRGIN ISLANDS REGION          M135 SG132 T113 D75 MA133 Z129 NG75

05 12 03 42 2025  39.5 -123.1 2.9 NORTHERN CALIFORNIA            M108 SG129 T76 D106 MA116 Z108 NG51

05 12 03 36 2025  54.4  161.5 4.0 NEAR EAST COAST OF KAMCHATKA   M58 SG119 T77 D152 MA108 Z102 NG31

05 12 03 16 2025  35.6  -96.7 2.8 OKLAHOMA                       M121 SG137 T91 D95 MA128 Z120 NG57

05 12 03 09 2025   1.1   98.9 4.9 NORTHERN SUMATRA, INDONESIA    M20 SG70 T87 D123 MA71 Z75 NG85

05 12 02 47 2025  41.7  -81.0 2.5 OHIO                           M116 SG149 T105 D98 MA141 Z134 NG51

05 12 02 17 2025  35.1   22.5 4.4 CENTRAL MEDITERRANEAN SEA      M64 SG130 T159 D118 MA142 Z149 NG57

05 12 02 10 2025  54.5  161.3 4.3 NEAR EAST COAST OF KAMCHATKA   M58 SG119 T77 D152 MA108 Z102 NG31

05 12 01 33 2025  41.6   74.8 4.5 KYRGYZSTAN                     M26 SG115 T118 D151 MA117 Z119 NG46

05 12 01 29 2025  25.2  -99.6 4.3 NUEVO LEON, MEXICO             M130 SG127 T85 D85 MA118 Z111 NG67

05 12 00 50 2025  25.6 -110.8 4.0 GULF OF CALIFORNIA             M126 SG123 T76 D89 MA112 Z104 NG66

05 12 00 41 2025  10.9  -62.4 5.0 OFFSHORE SUCRE, VENEZUELA      M140 SG125 T113 D67 MA127 Z125 NG83

05 12 00 40 2025 -16.9 -173.8 4.8 TONGA                          M96 SG58 T3 D84 MA44 Z35 NG103

05 11 23 42 2025  20.0   96.3 4.0 MYANMAR                        M2 SG88 T96 D141 MA89 Z91 NG66

05 11 22 33 2025  41.3   78.8 4.4 SOUTHERN XINJIANG, CHINA       M24 SG113 T115 D153 MA115 Z117 NG46

05 11 22 18 2025  29.0   87.5 3.8 WESTERN XIZANG                 M10 SG99 T106 D147 MA101 Z103 NG58

05 11 22 07 2025  35.7 -118.5 2.0 CENTRAL CALIFORNIA             M114 SG128 T76 D101 MA116 Z107 NG55

05 11 22 04 2025 -20.5 -174.1 5.4 TONGA                          M97 SG54 T0 D81 MA41 Z32 NG107

05 11 22 02 2025  47.9 -124.3 2.5 OLYMPIC PENINSULA, WASHINGTON  M101 SG135 T81 D114 MA122 Z113 NG42

05 11 21 49 2025  62.8  178.5 5.3 NEAR S COAST OF CHUKOTKA,      M67 SG130 T83 D147 MA118 Z111 NG24

05 11 21 37 2025   9.1  126.8 4.0 MINDANAO, PHILIPPINES          M32 SG72 T65 D131 MA67 Z66 NG76

05 11 21 25 2025  24.7  122.4 4.9 TAIWAN REGION                  M24 SG88 T76 D147 MA83 Z81 NG61

05 11 21 11 2025  29.0   87.6 5.6 WESTERN XIZANG                 M10 SG99 T106 D147 MA101 Z103 NG58

05 11 21 11 2025  29.0   87.5 5.7 WESTERN XIZANG                 M10 SG99 T106 D147 MA101 Z103 NG58

05 11 19 22 2025   0.8  -79.2 3.8 NEAR COAST OF ECUADOR          M156 SG112 T94 D58 MA110 Z107 NG92

05 11 18 48 2025  -6.2  151.5 4.7 NEW BRITAIN REGION, P.N.G.     M61 SG58 T36 D109 MA47 Z43 NG91

05 11 18 34 2025  45.6   26.5 4.2 ROMANIA                        M60 SG137 T149 D128 MA146 Z151 NG46

05 11 18 20 2025  -2.8  -78.5 3.7 ECUADOR                        M160 SG109 T94 D54 MA108 Z105 NG96

05 11 18 14 2025  -2.8  -78.5 4.2 ECUADOR                        M160 SG109 T94 D54 MA108 Z105 NG96

05 11 18 00 2025  27.6 -111.6 3.8 GULF OF CALIFORNIA             M123 SG124 T76 D91 MA113 Z105 NG64

05 11 17 38 2025 -17.7  168.1 4.7 VANUATU                        M80 SG51 T17 D92 MA37 Z30 NG103

05 11 17 05 2025 -44.3  -82.2 4.7 WEST CHILE RISE                M157 SG68 T77 D15 MA70 Z70 NG137

05 11 16 56 2025 -57.1  -68.0 3.8 DRAKE PASSAGE                  M143 SG58 T81 D0 MA63 Z66 NG150

05 11 13 36 2025  31.6 -104.0 2.1 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 11 12 13 2025 -29.1  141.2 2.9 NEW SOUTH WALES, AUSTRALIA     M66 SG34 T41 D90 MA27 Z26 NG114

05 11 12 12 2025  19.3  -64.9 3.5 VIRGIN ISLANDS REGION          M134 SG133 T113 D75 MA133 Z130 NG74

05 11 11 56 2025  31.6 -104.3 2.3 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05 11 11 53 2025 -56.9  -68.7 3.7 DRAKE PASSAGE                  M143 SG58 T81 D0 MA63 Z66 NG150

05 11 11 41 2025  36.9 -117.7 2.0 CENTRAL CALIFORNIA             M113 SG129 T77 D102 MA117 Z109 NG54

05 11 11 39 2025  46.2  136.2 4.6 PRIMOR'YE, RUSSIA              M40 SG109 T80 D161 MA101 Z97 NG39

05 11 11 24 2025  18.9  -65.2 3.7 PUERTO RICO REGION             M135 SG133 T113 D75 MA133 Z130 NG75

05 11 11 22 2025 -17.7  168.3 5.9 VANUATU                        M81 SG51 T17 D92 MA37 Z30 NG103

05 11 11 22 2025 -17.7  168.0 6.3 VANUATU                        M80 SG51 T17 D92 MA37 Z30 NG103

05 11 10 46 2025  19.1  -65.0 3.6 VIRGIN ISLANDS REGION          M135 SG133 T113 D75 MA133 Z130 NG74

05 11 10 41 2025   7.4  -73.8 4.6 NORTHERN COLOMBIA              M149 SG120 T101 D64 MA119 Z116 NG86

05 11 10 19 2025  27.7 -111.7 3.6 GULF OF CALIFORNIA             M123 SG124 T76 D91 MA113 Z105 NG63

05 11 10 10 2025   1.5  126.4 4.4 MOLUCCA SEA                    M35 SG65 T62 D123 MA60 Z59 NG84

05 11 09 56 2025  31.7 -104.5 2.1 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05 11 09 55 2025  19.1  -64.9 3.9 VIRGIN ISLANDS REGION          M135 SG133 T113 D75 MA133 Z130 NG74

05 11 09 46 2025 -24.2  -67.3 4.6 SALTA, ARGENTINA               M164 SG90 T95 D32 MA93 Z94 NG117

05 11 09 39 2025  33.9 -115.5 2.3 SOUTHERN CALIFORNIA            M116 SG128 T77 D98 MA116 Z108 NG57

05 11 09 29 2025  53.5 -166.7 4.4 FOX ISLANDS, ALEUTIAN ISLANDS  M76 SG125 T73 D135 MA111 Z104 NG34

05 11 09 07 2025  48.2 -123.2 2.0 STR. OF JUAN DE FUCA, WASHINGT M101 SG136 T81 D114 MA123 Z114 NG42

05 11 08 57 2025   3.9   97.0 5.8 NORTHERN SUMATRA, INDONESIA    M18 SG73 T90 D125 MA75 Z78 NG82

05 11 08 57 2025   3.7   96.9 6.2 NORTHERN SUMATRA, INDONESIA    M18 SG73 T90 D125 MA75 Z78 NG83

05 11 08 43 2025  40.3 -124.5 2.0 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05 11 08 27 2025  19.1  -66.5 3.0 PUERTO RICO REGION             M135 SG132 T112 D75 MA132 Z129 NG74

05 11 08 26 2025  31.9 -102.0 2.1 WESTERN TEXAS                  M123 SG132 T86 D92 MA122 Z114 NG60

05 11 08 09 2025  40.9   78.2 4.4 SOUTHERN XINJIANG, CHINA       M24 SG113 T116 D153 MA115 Z117 NG47

05 11 07 49 2025  27.5 -111.5 4.2 GULF OF CALIFORNIA             M124 SG124 T76 D91 MA113 Z105 NG64

05 11 07 45 2025  58.3 -155.1 4.0 ALASKA PENINSULA               M80 SG132 T79 D133 MA119 Z111 NG30

05 11 07 41 2025  37.8  -84.6 2.8 EASTERN KENTUCKY               M120 SG144 T101 D95 MA136 Z129 NG55

05 11 07 27 2025  19.1  -66.5 3.0 PUERTO RICO REGION             M135 SG132 T112 D75 MA132 Z129 NG74

05 11 07 24 2025  19.1  -66.4 3.1 PUERTO RICO REGION             M135 SG133 T112 D75 MA132 Z129 NG74

05 11 07 15 2025  32.3  137.4 4.0 IZU ISLANDS, JAPAN REGION      M38 SG95 T70 D149 MA87 Z83 NG53

05 11 07 06 2025  31.6 -104.5 3.0 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

 

 

 

May 11, 2025

 

Notable earthquakes:

 

A series of moderate quakes near the Peru-Ecuador border today could lead to a larger event in this area or at the antipode near Sumatra. These are occurring near the maximum stress with the full moon of May 12.

 

An earthquake of M 4.2 occurred north of Libya today. This is the strongest quake in the area since a series in Malta starting January 17, 2023.

 

An M 4.1 was widely felt in the area of eastern Tennessee and the entire eastern U.S. today. It was felt with intensity up to VI. This is one of three event of M>=4.1 in eastern Tennessee in the past 35 years.

 

The full moon of May 12 may bring the current lull in global seismicity to a halt. Expected enhanced seismicity is expected as:

 

The full moon will arrive on May 12, 2025 at 16:56 UT. Longitudes which are sub-solar (local solar noon) are near 75 West while those at local solar midnight are near 105 East longitude. In the west these include areas of Central America and the Caribbean and the west coast of South America while in the east these areas include western Indonesia, southeast and central Asia. These areas are most likely to see tidal triggering with this full moon.

 

ECUADOR/PERU

 

A series of moderate quakes on the Peru-Ecuador border today could lead to a larger event. These are occurring near the maximum stress with the full moon of May 12.

The series has been felt with intensity up to III in Piura, Peru at Mancora and Talara and in Loja, Ecuador at Cariamanga.

It has included earthquakes of M 4.7 and an M 4.7 to the north in Ecuador,

The event in Ecuador was reported with intensity IV in Eloy Alfaro, Guayas and II in Cuenca Azuay, Ecuador.

 

The last earthquake within about 150 km of today's epicenters in Ecuador with

M>=4.7 occurred as an M 5.2 on May 21, 2024. These could be considered

regional aftershocks of a major M 6.8 of March 18, 2023. At the time this summary noted:

 

"A strong M 6.7-6.8 hit the coast of Western Ecuador and northern Peru today.

NEIC reported it was felt with maximum intensity IX at Balao, Guayas, Ecuador; VIII in Naranjito; VI in Naranjal, VI in Plahyas, Guayaquil, Santa Lucia, Cuenca Azuay, V in Samborondon, Eloy Alfaro among others. Initial news reports indicate extensive but minor damage to buildings and

structures with at least eleven people killed in the quake including one in Peru. Much of the damage

and casualties occurred in Cuenca and Machala when walls collapsed. The epicenter

was near Balao about two hours from Guayaquil. It was felt in at least 13 provinces

of Ecuador. Many communities lost power and a two-story home and wharf collapsed. No tsunami was observed

nor expected. 

 

The time of this earthquake in Ecuador was within about 12 minutes of local

solar noon at a longitude near the longitude of maximum tidal stress (see above)

with the coming new moon.  It is likely this earthquake was promoted by strong tidal stresses associated

with the new moon of March 21" (March 18, 2023)

 

 

"Today's earthquake of M 6.7 is the strongest in Ecuador within about 200 km

of this epicenter in at least 35 years. An M 7.5 hit about 300 km northeast of this on February 22, 2019

and another was an M 7.1 on August 12, 2010. These were both at intermediate

epicenters and were felt on the surface with moderate intensity as

reported on February 22, 2019:

 

 

"A major earthquake of M 7.5 (EMSC) to 7.7 (IGP) hit the coast of Ecuador today. It occurred at an intermediate depth of 132 km and

was felt with moderate intensity throughout much of Ecuador. NEIC reported maximum intensity V-VII in Ecuador was felt

at Gualaceo, Azuay, Guayaquil, Loja, Eloy Alfaro, Puebloviejo (VI), La Troncal, Azogues (VII), Gualaceo,  Ecuador in Peru at Piura, Tarapoto, Iquitos, Jaen, Yunmaguas, Tumbes (VII), and with intensity VI in Ecuador at Puyo Pastaca, Banos, Tungurahua, Ambato, Cuenca, Zamora, Santa Lucia, Machala, Playas Guayas, Portoviejo, Manta, Salinas and in Peru at Moyobamba, Colan, Huanchanco, and in general within about 1000 km from the epicenter.

IGP reported intensity V in Pastaza with an aftershock of M 5.7 felt with III in Zarumilla, Peru. Some damage was reported. News sources on the web reported 

NEIC reported this aftershock at M 5.5 was felt in Ecuador with intensity V in Guayaquil, and Santa Lucia, and II-III in Ecuador at Eloy Alfara, Guayas, Cuenca Azuay, Machala, Pajan, Santa Elena, Montecristi, Banos and Manta, Ecuador. no injuries associated with the quake. This was probably due to the intermediate

depth. A shallow quake would have caused considerable damage and destruction.

A slightly larger quake of M 7.8 on April 16, 2016 killed more than 700 people

and destroyed hundreds of buildings and cost more than $3 billion in damages.

Earthquakes of this size in Ecuador can help promote seismicity in California

several months later. This summary will follow this in future issues.

 

...

 

The last earthquake located within about 250 km of today's M 7.5 occurred more

than 30 years ago. The only comparable event in the region in this time period

was the M 7.8 off Ecuador on April 16, 2016. That event occurred about 350 km northwest of today's epicenter." (February 22, 2019, March 18, 2023)

 

 

Today's activity is near the longitude of maximum tidal stress with the full moon

of May 12 and may have been promoted by stresses associated with that tidal alignment (see above).

 

The antipode of today's activity in Ecuador is in Sumatra near 4N 99E. Moderate

enhancement of seismicity could occur near this epicenter Sumatra in the next several days.

Following the great M 9.0 earthquake of December 26, 2004, this relationship

between Sumatra and Ecuador earthquakes was emphasized in this summary twenty

years ago in May, 2005 as:

 

 

"An earthquake measuring M 6.1 occurred today in the region near the Peru-Ecuador

border. It was followed later in the day by a strong earthquake in the Sumatra/

Nicobar Islands with M 5.5-6.5. Data on the NEIC website indicated that the Ecuador

quake was reported felt with maximum intensity IV about 150 km from the epicenter in the city of Guayaquil,

Ecuador. It was also reported felt more than 400 km to the north in Quito,

Ecuador. There were no immediate reports of damage or injuries. In neighboring Colombia,

officials have raised the volcanic alert on Galeras Volcano to level two meaning

an eruption could occur within days or weeks at that Volcano.

The earthquake epicenter is within about 200 km of the exact antipode of

the M 6.7-6.9 event in the Sibolga, Sumatra area of Indonesia which

occurred two days ago on May 19. This was one of only three aftershocks of

the M 9.3 quake in the region which have had magnitudes of M>=6.9 (EMSC data).

When that event occurred we noted the relation to the Peru-Ecuador-Colombia

seismicity when we stated in this summary: "A series of events in the antipodal

region of Peru, Ecuador and Colombia also occurred over the past day.

The most interesting of these in terms of possible triggering occurred

within about 200 km of the exact antipode of today's Nias event of M 6.9

about 30 minutes prior to the Nias event with M 4.5." (geoForecaster Inc.

May 19, 2005). We have discussed this antipodal relationship in several previous

summaries during the past five months." (May 22, 2005)

 

A moderate M 3.9 occurred near the antipode of Ecuador today in northern Sumatra and may be

a foreshock to a coming regional event. Parameters for this event follow:

 

O: 10MAY2025 07:19:42  4.5N  95.3E ML=3.9  EMSC   NORTHERN SUMATRA, INDONESIA

 

The activity in Ecuador is at 103 degrees from the M 6.9 in New Zealand of

March 25 and 105 degrees from the M 6.9 in Macquarie Island region and at the fourth node (90 degrees) from the M 7.1 in Tonga of March 30 and at the seventh node (52 degrees) from the M 7.4 in the Drake Passage

of May 2 and may have been promoted by energy from those sources.

 

Forecast 171639 had expected this activity in Ecuador was likely within about 200

km around May 7.

 

O: 10MAY2025 12:12:53  2.6S  79.7W mb=4.7  EMSC   NEAR COAST OF ECUADOR

O: 11MAY2025 01:29:57  3.9S  80.9W mb=4.7  EMSC   PERU-ECUADOR BORDER REGION

O: 11MAY2025 01:54:20  4.0S  80.9W ML=3.8  EMSC   PERU-ECUADOR BORDER REGION

O: 11MAY2025 02:07:09  4.0S  80.9W mb=4.7  EMSC   PERU-ECUADOR BORDER REGION

O: 11MAY2025 02:59:30  4.0S  81.0W ML=4.3  EMSC   PERU-ECUADOR BORDER REGION

O: 11MAY2025 05:16:50  4.0S  80.9W mb=4.7  EMSC   PERU-ECUADOR BORDER REGION

O: 11MAY2025 02:44:17  4.1S  81.0W ML=4.2  EMSC   NEAR COAST OF NORTHERN PERU

O: 11MAY2025 05:42:42  4.1S  81.0W ML=4.4  EMSC   NEAR COAST OF NORTHERN PERU

O: 11MAY2025 05:53:45  4.1S  81.0W ML=4.2  EMSC   NEAR COAST OF NORTHERN PERU

O: 10MAY2025 07:19:42  4.5N  95.3E ML=3.9  EMSC   NORTHERN SUMATRA, INDONESIA

O: 10MAY2025 12:12:53  2.6S  79.7W ML=4.7  ANSS   Ecuador/Peru

P: 07MAY2025 171639    2.0S  78.0W 4.0-5.5 BABBA  Ecuador               

 

LIBYA:

 

A moderate M 4.2 hit the area north of Libya today. NEIC reported it was felt with intensity III in Tarabulus, Libya.

EMSC reported moderate shaking in Libya at Al Khums and Tripoli.

This is the strongest earthquake within about 200 km of this epicenter since an M 5.0 and M 5.1 about 200 km north

of this epicenter on January 17 and 18, 2023. At the time this summary noted:

 

"An earthquake of M 5.0 occurred near Malta in the Central Mediterranean today. NEIC reported it was felt with intensity I-II in Malta at Floriana and Ta Xbiex, Inner Harbour and San Pawl il-Bahar.

A foreshock of M 4.2 was felt with intensity III in Mellieha, Northern Malta.

This earthquake occurred simultaneously with a C3.0 solar flare which began

at the time of the M 5.0 in Malta. This earthquake of M 5.0 is the strongest

within about 150 km of this epicenter in the past 30 years. An M 5.3 occurred about 200

km west of this on September 10, 1993 and near this epicenter with M 5.3 on September 29, 1992.

The epicenter was within minutes of local solar midnight when the M1.8 class

solar flare began (#1310) and was probably promoted by SFE associated with

that flare which maximize at this hour" (Jamuary 18, 2023)

 

Forecast 171793 had expected enhanced seismicity in the area of Malta in late April, 2025.

 

 

O: 10MAY2025 17:35:28 33.2N  14.0E ML=4.2  ANSS   North of Libya

P: 23APR2025 171793   36.0N   9.0E 3.0-4.9 DCCAA  Western Mediterranean 

 

EASTERN TENNESSEE

 

An M 4.1 was widely felt in the area of eastern Tennessee today. It was felt with intensity up to VI in the epicentral area near Fontana Dam, Teneessee. NEIC had nearly 45,000 felt reports for this earthquake.

This epicenter is near the maximum tidal stress longitude for the full moon of

May 12 and may have been promoted by stresses associated with that event.

Among many other reported intensities, NEIC reported intensity V in North Carolina, Kentucky and Tennessee; IV New York, New Jersey, Pennsylvania, Virginia, West Virginia, North Carolina, South Carolina, Georgia, Florida, Alabama, Tennessee, Kentucky, Ohio, Michigan, Illinois, Missouri with III as far as Massachusetts, Portland Maine, Connecticut, Maryland.

 

The last earthquake in eastern Tennessee within about 150 km of this epicenter

occurred on December 12, 2018 about 100 km to the west of today's epicenter.

The only other event in eastern Tennessee with equal of greater magnitude than

M 4.1 in the past 35 years was an M 4.6 about 200 km west of today's epicenter

on April 29, 2003. At the time of the December, 2018 event this summary noted:

 

 

"A moderate earthquake of M 4.4 was widely felt in the region of eastern Tennessee today.

It was followed by several light aftershocks. NEIC reported maximun intensity with this earthquake of V felt in Tennessee at Ten Mile, Decatur, Grandview; IV in Dayton, Sweetwater, Athens, and III in Spring City, Niota, Evansville, Philadelphia. It was reported felt as far as Georgia, Alabama, North and South Carolina, and other areas of the SE U.S. within about 300 km of the epicenter.

This epicenter is located at 103 degrees from the M 7.1 in the South Sandwich Islands which occurred yesterday.  The layered earth reflects and refracts seismic energy off internal transition layers. In this case energy arriving at the core-mantle boundary is reflected and refracted back to the surface. Because of the strong differential oof material on either side of

this boundary, nearly all energy which would normally be spread out in the distance range 105-144 degrees from the energy source  arrives

at the surface in the limited range of about 100-105 degrees. This is 7-8 times more concentrated

than at other distances and can help to trigger unusual and strong earthquakes at the energy source,

as in the case of the South Sandwich Ilnds (100 degrees from the Loyalty Islands) and Tennessee (103 degrees from the South Sandwich Islands.).

This epicenter is also at 103 degrees from the M 8.2 in Fiji of August, the last great global earthquake. The last earthquake of M>=4.4 in eastern Tennessee within about 200 km of today's epicnter

occurred as an M 4.6 on April 29, 2003 about 200 km southwest of today's epicenter.

It was the only other such event in the are in the past 30 years at least.

An earthquake of M 4.6 hit the area on January 19, 1976 and an M 5.6 may have occurred on November 30, 1973.

The mainshock magnitude of this event is in question.

Forecast 121788 had expected activity in this area was likely around December 8.

This summary issued a special report in regard to the April, 2003 quake and noted

it in this summary as:

 

"An earthquake of M 4.9 occurred this morning in the southern portion of the

Eastern Tennessee Seismic Zone near the tri-state border of Georgia, Alabama and

Tennessee. While this event did not do significant damage in the region, it

was felt over a broad area from Illinois to West Virginia and from Kentucky

to southern Alabama." (April 30, 2003, December 12, 2018)

 

Today's epicenter is near the third node (120 degrees) from Myanmar; the fourth node from

the Drake Passage (90 degrees) and 102 degrees from Tonga and may have

been promoted by energy from those larger recent earthquakes. 

 

The earthquake in eastern Tennessee may also have been promoted by SFE associated

with solar flare 2510 (C2.4) as it occurred towards the end of that flare

which parameters from SWPC follow:

 

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

2510       1249   1255      1259   C2.4      (May 10, 2025)   1.7E-03  

Eastern Tennessee M 4.1 13:04 UT

 

 

Forecast 172031 (among others) expected enhanced seismicity in this region

of Tennessee was likely in early May or late April, 2025.

 

O: 10MAY2025 13:04:20 35.5N  83.9E ML=4.1  ANSS   Eastern Tennessee

P: 01MAY2025 172031   35.0N  82.0E 2.0-4.2 CABAA  Kentucky/Tennessee/NC 

 

NEIC reported an earthquake of M 4.6 in Central Chile was felt with  intensity up to II-III in the area(s) of Central Chile with II in Santiago.

EMSC reported moderate to strong shaking in Valpariso at Melipilla, Cerro Navia, Valparaiso, Rancagua, Machali, Puchuncavi.

 

NEIC reported an earthquake of M 3.0 in Northern California was felt with  intensity up to II-III in the area(s) of Northern California at Paradise.

 

NEIC reported an earthquake of M 2.8 in Western Nevada was felt with  intensity up to II-III in the area(s) of Western Nevada in Gardnerville.

 

EMSC reported an earthquake of M 4.3 in Negros, Philippines was felt with  intensity up to IV in the area(s) of Negros, Philippines in Dumaguete City.

 

EMSC reported an earthquake of M 4.1 in Kyrgyzstan was felt with  intensity up to IV in the area(s) of Kyrgyzstan in Almaty, Kazakhstan, Light Sahking was also noted in Kazakhstan at Alatau, Ashhybulaq, Qaraqastek, Shyrganaq and in Kant, Kyrgyzstan among others.

 

 

No Tropical Cyclones are currently active.

 

A tropical cyclone may be forming south of Papua New Guinea. This system is currently

located at 8S 137E and tracking to the south with winds up to 33 kts. Some enhanced seismicity in New Guinea is possible as this storm is in the region. The antipode is at 8N 43W in the Central Mid-Atlantic Ridge where a moderate earthquake occurred yesterday, an event that may have been promoted by energy from this storm.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

2390       0055   0103      0106   C3.1      (May 10, 2025)   1.4E-03  

Fiji M 4.5 01:06 UT

Buryatiya, Russia M 3.9 01:17 UT

 

2410       0342   0352      0358   C1.9      (May 10, 2025)   1.4E-03  

2460       0727   0734      0738   C1.0      (May 10, 2025)   6.6E-04  

2500       1048   1108      1112   C1.0      (May 10, 2025)   1.8E-03  

2490       1112   1236      1249   C2.4      (May 10, 2025)   8.7E-04  

2510       1249   1255      1259   C2.4      (May 10, 2025)   1.7E-03  

Eastern Tennessee M 4.1 13:04 UT

 

2560       1616   1621      1626   C5.5      (May 10, 2025)   2.7E-03  

Banda Sea M 4.3 16:24 UT

 

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:  active May 10-11 unsettled May 12.  Solar M-flare chance: 40% X-class: 5% proton storm: 5%

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)    15 24 11 15:00 5   77 136

 

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the North and South Geomagnetic poles due to the geomagnetic

storm today.

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05 11 08 09 2025  40.8   78.1 4.4 SOUTHERN XINJIANG, CHINA       M24 SG113 T116 D152 MA115 Z117 NG47

05 11 07 49 2025  27.5 -111.5 4.2 GULF OF CALIFORNIA             M124 SG124 T76 D91 MA113 Z105 NG64

05 11 07 24 2025  19.1  -66.4 3.1 PUERTO RICO REGION             M135 SG133 T112 D75 MA132 Z129 NG74

05 11 07 15 2025  32.4  137.3 4.0 IZU ISLANDS, JAPAN REGION      M38 SG95 T70 D149 MA87 Z83 NG53

05 11 07 06 2025  31.6 -104.5 3.0 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05 11 06 48 2025   9.6  123.0 4.3 NEGROS, PHILIPPINES            M28 SG73 T68 D132 MA69 Z68 NG76

05 11 06 44 2025  46.2   53.3 4.2 WESTERN KAZAKHSTAN             M42 SG126 T133 D143 MA131 Z134 NG43

05 11 06 43 2025 -33.8  -71.5 4.6 VALPARAISO, CHILE              M163 SG80 T88 D23 MA83 Z84 NG127

05 11 06 25 2025 -15.9  -74.6 4.3 NEAR COAST OF SOUTHERN PERU    M169 SG97 T92 D41 MA98 Z97 NG109

05 11 06 05 2025  19.0  -65.2 3.0 PUERTO RICO REGION             M135 SG133 T113 D75 MA133 Z130 NG75

05 11 05 53 2025  -4.1  -81.0 4.2 NEAR COAST OF NORTHERN PERU    M161 SG107 T91 D53 MA105 Z102 NG97

05 11 05 42 2025  -4.1  -81.0 4.4 NEAR COAST OF NORTHERN PERU    M161 SG107 T91 D53 MA105 Z102 NG97

05 11 05 29 2025 -56.8  -68.3 3.3 DRAKE PASSAGE                  M143 SG58 T81 D0 MA63 Z66 NG150

05 11 05 16 2025  -4.0  -80.9 4.7 PERU-ECUADOR BORDER REGION     M161 SG107 T91 D53 MA105 Z102 NG97

05 11 05 11 2025 -56.5  -67.6 3.4 DRAKE PASSAGE                  M143 SG58 T81 D0 MA64 Z66 NG150

05 11 05 00 2025  50.9  156.2 4.8 KURIL ISLANDS                  M54 SG115 T75 D153 MA104 Z98 NG35

05 11 04 52 2025  -5.8  147.4 5.0 EASTERN NEW GUINEA REG., P.N.G M57 SG58 T40 D111 MA48 Z44 NG91

05 11 04 10 2025  39.5 -122.0 3.0 NORTHERN CALIFORNIA            M109 SG130 T76 D106 MA117 Z108 NG51

05 11 04 06 2025  18.3  -66.4 3.0 PUERTO RICO                    M136 SG132 T112 D74 MA132 Z128 NG75

05 11 03 09 2025  19.3  -66.3 3.2 PUERTO RICO REGION             M135 SG133 T112 D75 MA133 Z129 NG74

05 11 02 59 2025  -4.0  -81.0 4.3 PERU-ECUADOR BORDER REGION     M161 SG107 T91 D53 MA105 Z102 NG97

05 11 02 44 2025  -4.1  -81.0 4.2 NEAR COAST OF NORTHERN PERU    M161 SG107 T91 D53 MA105 Z102 NG97

05 11 02 42 2025  31.7 -104.2 2.3 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 11 02 07 2025  -4.0  -80.9 4.7 PERU-ECUADOR BORDER REGION     M161 SG107 T91 D53 MA105 Z102 NG97

05 11 01 54 2025  -4.0  -80.9 3.8 PERU-ECUADOR BORDER REGION     M161 SG107 T91 D53 MA105 Z102 NG97

05 11 01 46 2025  31.7 -104.3 2.1 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 11 01 29 2025  -3.9  -80.9 4.7 PERU-ECUADOR BORDER REGION     M161 SG107 T91 D53 MA105 Z102 NG97

05 11 01 04 2025  32.6 -115.3 2.9 BAJA CALIFORNIA, MEXICO        M118 SG127 T76 D97 MA115 Z107 NG58

05 11 01 01 2025  32.6 -115.2 2.5 BAJA CALIFORNIA, MEXICO        M118 SG127 T76 D97 MA115 Z107 NG58

05 11 00 49 2025 -23.7  179.4 4.6 SOUTH OF FIJI ISLANDS          M93 SG49 T7 D81 MA35 Z26 NG110

05 11 00 36 2025  44.4  148.6 4.6 KURIL ISLANDS                  M48 SG108 T72 D153 MA98 Z93 NG41

05 10 23 37 2025  31.7 -104.1 2.3 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 10 23 31 2025  31.7 -104.5 2.5 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05 10 22 50 2025  33.3 -116.4 2.2 SOUTHERN CALIFORNIA            M116 SG127 T76 D98 MA115 Z107 NG58

05 10 20 53 2025  40.3 -124.7 2.1 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05 10 20 38 2025   2.1  124.2 4.2 CELEBES SEA                    M33 SG66 T64 D124 MA61 Z61 NG83

05 10 20 23 2025  17.9  122.7 4.0 LUZON, PHILIPPINES             M25 SG81 T72 D140 MA76 Z75 NG68

05 10 20 20 2025  -7.6  128.7 4.3 KEPULAUAN BARAT DAYA, INDONESI M43 SG56 T56 D114 MA51 Z50 NG93

05 10 20 10 2025  19.1  -66.6 3.4 PUERTO RICO REGION             M135 SG132 T112 D75 MA132 Z129 NG74

05 10 20 04 2025  33.6 -116.7 2.1 SOUTHERN CALIFORNIA            M116 SG127 T76 D98 MA115 Z107 NG57

05 10 19 23 2025  31.7 -115.9 3.1 BAJA CALIFORNIA, MEXICO        M118 SG126 T75 D96 MA114 Z106 NG59

05 10 19 11 2025  19.1  -66.5 3.0 PUERTO RICO REGION             M135 SG132 T112 D75 MA132 Z129 NG74

05 10 19 10 2025 -57.3  -67.4 3.5 DRAKE PASSAGE                  M142 SG58 T81 D0 MA63 Z66 NG150

05 10 19 02 2025  19.2  -67.3 3.5 PUERTO RICO REGION             M135 SG132 T111 D75 MA132 Z129 NG74

05 10 18 02 2025  -1.6  -77.7 4.2 ECUADOR                        M158 SG110 T95 D55 MA109 Z106 NG95

05 10 17 51 2025 -18.0 -178.3 4.2 FIJI REGION                    M92 SG55 T4 D85 MA41 Z33 NG104

05 10 17 35 2025  33.5   14.1 4.2 CENTRAL MEDITERRANEAN SEA      M71 SG133 T165 D113 MA145 Z153 NG59

05 10 17 33 2025  54.6 -156.8 2.9 SOUTH OF ALASKA                M81 SG129 T76 D132 MA115 Z107 NG33

05 10 17 30 2025 -24.3  -67.4 4.0 SALTA, ARGENTINA               M164 SG90 T95 D32 MA93 Z93 NG118

05 10 17 02 2025  38.2 -118.5 2.8 NEVADA                         M111 SG130 T78 D103 MA118 Z109 NG53

05 10 16 43 2025  36.9 -104.8 2.2 NEW MEXICO                     M118 SG135 T86 D98 MA124 Z116 NG55

05 10 16 24 2025  -6.4  128.1 4.3 BANDA SEA                      M42 SG57 T57 D115 MA52 Z52 NG92

05 10 15 35 2025  42.9   76.8 4.1 KYRGYZSTAN                     M26 SG115 T117 D153 MA117 Z119 NG45

05 10 15 07 2025  31.7 -104.2 2.2 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05 10 15 02 2025  32.3 -101.0 2.1 WESTERN TEXAS                  M123 SG133 T87 D93 MA123 Z115 NG60

05 10 13 42 2025  -2.3  139.0 4.3 NEAR N COAST OF PAPUA, INDONES M48 SG61 T49 D117 MA53 Z50 NG87

05 10 13 04 2025  35.5  -84.0 4.1 EASTERN TENNESSEE              M122 SG143 T101 D92 MA135 Z128 NG57

05 10 12 36 2025 -23.7 -179.6 4.2 SOUTH OF FIJI ISLANDS          M93 SG49 T6 D81 MA35 Z27 NG110

05 10 12 29 2025  20.4   98.2 4.0 MYANMAR                        M2 SG88 T95 D142 MA88 Z90 NG66

05 10 12 12 2025  -2.6  -79.7 4.7 NEAR COAST OF ECUADOR          M160 SG108 T93 D54 MA107 Z104 NG95

05 10 12 04 2025  18.1 -100.2 4.1 GUERRERO, MEXICO               M137 SG121 T81 D79 MA113 Z106 NG74

05 10 11 55 2025  50.5 -173.5 3.9 ANDREANOF ISLANDS, ALEUTIAN IS M73 SG120 T70 D137 MA107 Z100 NG36

05 10 11 45 2025  29.7  130.0 4.7 RYUKYU ISLANDS, JAPAN          M31 SG93 T73 D150 MA86 Z83 NG56

05 10 11 41 2025  18.9  -65.2 3.6 PUERTO RICO REGION             M135 SG133 T113 D75 MA133 Z130 NG75

05 10 11 02 2025  31.7 -104.6 2.2 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05 10 10 30 2025  55.0 -157.6 2.8 ALASKA PENINSULA               M81 SG129 T76 D132 MA115 Z107 NG33

05 10 10 25 2025  15.9  -94.4 4.0 OFFSHORE OAXACA, MEXICO        M141 SG121 T85 D75 MA114 Z108 NG76

05 10 09 36 2025  65.2  -16.3 3.1 ICELAND                        M79 SG167 T132 D127 MA168 Z162 NG28

05 10 07 56 2025  27.7 -111.7 3.6 GULF OF CALIFORNIA             M123 SG124 T76 D91 MA113 Z105 NG63

05 10 07 53 2025  19.1  -64.5 3.9 VIRGIN ISLANDS REGION          M134 SG133 T114 D75 MA133 Z130 NG74

05 10 07 19 2025   4.5   95.3 3.9 NORTHERN SUMATRA, INDONESIA    M17 SG74 T92 D126 MA76 Z80 NG82

05 10 01 17 2025  52.7  100.5 3.9 BURYATIYA, RUSSIA              M30 SG119 T103 D172 MA115 Z114 NG34

 

 

May 10, 2025

 

Notable earthquakes:

 

The strongest earthquake in the world today was an M 5.3-5.8 in the area of Timor Indonesia. 

 

The full moon will arrive on May 12, 2025 at 16:56 UT. Longitudes which are sub-solar (local solar noon) are near 75 West while those at local solar midnight are near 105 East longitude. In the west these include areas of Central America and the Caribbean and the west coast of South America while in the east these areas include western Indonesia, southeast and central Asia. These areas are most likely to see tidal triggering with this full moon.

 

The strongest earthquake in the U.S. or Canada today was an M 3.8 in the Near Islands, Aleutians, Alaska. It was not reported felt in this remote area.

 

An earthquake of M 4.3 in the northern Dominican Republic today was reported by NEIC to have been felt with intensity II in the Dominican Republic at Montellano and Puerto Plata and Santiago.

 

OHIO:

 

An earthquake of M 2.9 occurred today in eastern Ohio. NEIC reported it was felt with intensity up to IV in Ohio at Byesville, Caldwell and Pleasant City with III in Cumberland, Lore City, Quaker City, Senecaville, Wellston and Athens and II in Cambridge, Painesville and Canton.

The continues light seismicity in the area since late April,  2025. When this

swarm began this summary noted:

 

"An earthquake of M 3.1 occurred in eastern Ohio today. NEIC reported it was felt with intensity IV in Ohio at Cumberland, Pleasant City and Sarahsville with III in Byesville, Caldwell, Senecaville, New Paris, Dayton and II in Newark, South Zanesville, Mason.

This is the strongest earthquake in Ohio within about 100 km of today's

epicenter since an M 3.4 on June 3, 2017. At the time this summary noted:

 

 

 

"An unusual earthquake of M 3.5 was widely felt in Ohio, U.S. today. NEIC reported

the event was felt with maximum intensity IV in Ohio at Lewisville, Quaker City, Byesville, and II-III in Senecaville, Salesville, Barnesville, Sarahsville, Caldwell, Cambridge, Cumberland, Norwich, Beverly, Lowell, Marietta, Little Hocking and Warren and in Evans City, Pennyslvania and Louisville, Kentucky and in general within about 50 km of the epicenter.

This is the second earthquake to be felt in Ohio in the past week, An M 3.4 occurred

about 150 km southwest of this on May 24. The last earthquake in Ohio within about

150 km of this epicenter occurred on November 20, 2013 with M 3.5. The only

such earthquake in Ohio in the past 25 years of larger magnitude was an M 3.6

on February 19, 1995 about 250 km southwest of today's epicenter." (June 3, 2017, April 24, 2025)

 

Today's event in Ohio, like several others in this swarm coincided with a C-class

solar flare (#2090 C2.2), the second strong flare of the day. Data for this flare from SWPC follow:

 

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

2090       0313   0320      0322   C2.2      (May 9, 2025)   4.0E-04  

Ohio, M 2.9 03:13 UT

Hokkaido M 4.5 03:24 UT

 

Forecast 171816 had expected this earthquake in Ohio within about 50 km was

likely in early May.

 

O: 09MAY2025 03:13:43 39.9N  81.4W ML=2.9  EMSC   Ohio      

P: 02MAY2025 171816   40.0N  81.0W 2.0-3.9 BAAAA  Ohio/Lake Erie        

 

BANDA SEA, INDONESIA

 

The strongest earthquake in the world today was an M 5.3-5.8 in the area of

Timor Indonesia.  NEIC reported this earthquake of with M 5.3 in Kep Barbar, Indonesia was felt with  intensity up to II-III in the area(s) of  Darwin Northern Territory, Australia.

This event occurred at the end of solar Flare 2330 of B8.9 and may have been

promoted by SFE from that flare. Data from SWPC for this flare follow:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

 

2330       2230   2238      2243   B8.9      (May 9, 2025)   2.9E-04

Banda Sea M 5.3-5.8 22:45 UT

 

 

Forecast 171953 had expected this event within about 100 km was likely in early Mqy, 2025.

 

O: 09MAY2025 22:45:44  7.2S 129.3E ML=5.8  BMG    Timor, Indonesia

O: 09MAY2025 22:45:44  7.1S 129.1E ML=5.3  EMSC   Kep. Barbar, Indonesia

P: 04MAY2025 171953    7.0N 128.0W 4.0-5.4 BAAAA  Banda Sea             

 

NEIC reported an earthquake of M 2.8 in Oklahoma was felt with  intensity up to II-III in the area(s) of Oklahoma in Tulsa, Meeker, Prague and Seiminole and II in Yukon, Earlsboro and Paden.

 

 

NEIC reported an earthquake of M 4.7 in Vanuatu was felt with  intensity up to II-III in the area(s) of Vanuatu at Vila Shefa with IV.

 

NEIC reported an earthquake of M 5.1 in northern Vanuatu may have been felt with  intensity up to II-III in the area(s) of northern Vanuatu in Vila Shefa with IV.

 

EMSC reported an earthquake of M 4.5 in Hindu Kush, Afghanistan was felt with  intensity up to IV in the area(s) of Hindu Kush, Afghanistan in Khwazakhela and Peshawar, Kohat, Hafiz Bagh, Srinagar, Buchpora, Pakistan,  and Kabul, Afghanistan.

 

EMSC reported an earthquake of M 4.4 in Myanmar was felt with  intensity up to IV in the area(s) of Myanmar in Thazi, Mandalay.

 

No Tropical Cyclones are currently active.

 

A tropical cyclone may be forming south of Papua New Guinea. This system is currently

located at 8S 137E and tracking to the south with winds up to 33 kts. Some enhanced seismicity in New Guinea is possible as this storm is in the region. The antipode is at 8N 43W in the Central Mid-Atlantic Ridge where a moderate earthquake occurred yesterday, an event that may have been promoted by energy from this storm.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

2060       0252   0304      0313   C1.9      (May 9, 2025)   6.2E-04  

2090       0313   0320      0322   C2.2      (May 9, 2025)   4.0E-04  

Ohio, M 2.9 03:13 UT

Hokkaido M 4.5 03:24 UT

 

2070       0422   0430      0432   C1.8      (May 9, 2025)   7.7E-04  

Honshu M 4.6 04:34 UT

South Island, New Zealand M 4.0 04:44 UT

 

2110       0613   0619      0623   C1.0      (May 9, 2025)   6.3E-04  

Sakhalin M 4.4 06:15 UT

 

2150       0709   0716      0718   C1.4      (May 9, 2025)   5.9E-04  

2160       0814   0828      0841   C1.6      (May 9, 2025)   2.3E-03  

Myanmar M 4.4 08:37 UT

 

2190       1114   1121      1125   C4.9      (May 9, 2025)   1.9E-03  

 

2330       2230   2238      2243   B8.9      (May 9, 2025)   2.9E-04

Banda Sea M 5.3-5.8 22:45 UT

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:  active May 10-11 unsettled May 12.  Solar M-flare chance: 40% X-class: 5% proton storm: 5%

The current geomagnetic storm continued today reaching a peak at high latitude

with kp 7 around 08:30 UT.

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)    15 24 11 15:00 5   77 136

 

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the North and South Geomagnetic poles due to the geomagnetic

storm today.

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05 10 10 25 2025  15.9  -94.4 4.0 OFFSHORE OAXACA, MEXICO        M141 SG121 T85 D75 MA114 Z108 NG76

05 10 09 36 2025  65.2  -16.3 3.1 ICELAND                        M79 SG167 T132 D127 MA168 Z162 NG28

05 10 08 19 2025  21.2  121.8 3.0 TAIWAN REGION                  M24 SG85 T75 D143 MA80 Z79 NG64

05 10 07 56 2025  27.7 -111.7 3.6 GULF OF CALIFORNIA             M123 SG124 T76 D91 MA113 Z105 NG63

05 10 07 53 2025  19.1  -64.5 3.9 VIRGIN ISLANDS REGION          M134 SG133 T114 D75 MA133 Z130 NG74

05 10 06 41 2025  -5.5  150.9 4.4 NEW BRITAIN REGION, P.N.G.     M60 SG59 T37 D110 MA48 Z44 NG91

05 10 05 08 2025  36.7   71.2 4.6 HINDU KUSH REGION, AFGHANISTAN M25 SG112 T121 D146 MA115 Z118 NG51

05 10 05 07 2025 -20.7  -68.9 4.0 TARAPACA, CHILE                M165 SG93 T96 D36 MA96 Z96 NG114

05 10 04 49 2025  14.5  -94.2 4.1 OFF COAST OF CHIAPAS, MEXICO   M142 SG120 T85 D74 MA113 Z107 NG78

05 10 04 35 2025  52.2  160.9 4.3 OFF EAST COAST OF KAMCHATKA    M57 SG117 T75 D151 MA106 Z100 NG33

05 10 04 18 2025  52.1  160.7 4.2 OFF EAST COAST OF KAMCHATKA    M57 SG117 T75 D151 MA106 Z99 NG34

05 10 03 43 2025  19.1  -66.5 3.0 PUERTO RICO REGION             M135 SG132 T112 D75 MA132 Z129 NG74

05 10 03 34 2025 -16.1  -74.7 5.1 NEAR COAST OF SOUTHERN PERU    M169 SG97 T92 D40 MA98 Z96 NG109

05 10 03 34 2025  -7.1  124.9 4.1 BANDA SEA                      M40 SG57 T60 D115 MA52 Z53 NG92

05 10 03 10 2025  35.5  -96.7 3.0 OKLAHOMA                       M121 SG137 T91 D95 MA128 Z120 NG57

05 10 02 34 2025  51.6 -175.9 3.4 ANDREANOF ISLANDS, ALEUTIAN IS M71 SG121 T71 D139 MA108 Z100 NG35

05 10 02 11 2025 -24.1  -67.5 4.0 SALTA, ARGENTINA               M164 SG90 T95 D32 MA93 Z94 NG117

05 10 01 37 2025  50.1  178.4 3.2 RAT ISLANDS, ALEUTIAN ISLANDS  M68 SG118 T70 D141 MA105 Z98 NG36

05 10 01 17 2025  52.7  100.5 3.9 BURYATIYA, RUSSIA              M30 SG119 T103 D172 MA115 Z114 NG34

05 10 01 06 2025 -20.8 -177.9 4.5 FIJI REGION                    M94 SG53 T3 D83 MA39 Z30 NG107

05 10 00 39 2025 -20.0 -178.2 4.9 FIJI REGION                    M93 SG53 T4 D83 MA39 Z31 NG106

05  9 22 53 2025  34.7 -118.8 2.1 SOUTHERN CALIFORNIA            M114 SG127 T75 D100 MA115 Z106 NG56

05  9 22 45 2025  -7.1  129.1 5.8 KEPULAUAN BABAR, INDONESIA     M43 SG56 T56 D114 MA51 Z51 NG92

05  9 22 45 2025  -7.1  129.1 5.3 KEPULAUAN BABAR, INDONESIA     M43 SG56 T56 D114 MA51 Z51 NG92

05  9 22 35 2025  31.2 -115.3 3.1 BAJA CALIFORNIA, MEXICO        M119 SG126 T76 D96 MA114 Z106 NG60

05  9 21 48 2025 -41.9   85.0 4.6 SOUTHEAST INDIAN RIDGE         M64 SG36 T84 D79 MA46 Z54 NG129

05  9 21 44 2025  34.0 -119.0 2.1 CHANNEL ISLANDS REG., CALIFORN M115 SG126 T75 D100 MA114 Z106 NG57

05  9 21 27 2025  23.8  120.7 4.3 TAIWAN                         M22 SG88 T77 D146 MA83 Z81 NG62

05  9 20 58 2025   9.3  126.9 4.1 MINDANAO, PHILIPPINES          M32 SG73 T65 D131 MA67 Z66 NG76

05  9 19 54 2025  41.9 -119.6 2.4 NEVADA                         M108 SG133 T79 D107 MA120 Z111 NG49

05  9 19 53 2025  17.0 -100.9 4.1 OFFSHORE GUERRERO, MEXICO      M137 SG119 T80 D78 MA111 Z105 NG75

05  9 19 37 2025  37.5 -118.9 2.4 CENTRAL CALIFORNIA             M112 SG129 T77 D103 MA117 Z108 NG53

05  9 19 07 2025 -33.1 -178.7 5.0 SOUTH OF KERMADEC ISLANDS      M98 SG41 T13 D73 MA28 Z19 NG119

05  9 18 11 2025 -27.8  -71.1 4.0 ATACAMA, CHILE                 M166 SG86 T91 D29 MA89 Z89 NG121

05  9 17 49 2025  40.4 -125.2 2.4 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D108 MA116 Z107 NG50

05  9 17 44 2025  53.3  159.0 4.9 NEAR EAST COAST OF KAMCHATKA   M56 SG118 T76 D153 MA107 Z101 NG32

05  9 17 35 2025  38.1 -122.1 2.2 SAN FRANCISCO BAY AREA, CALIF. M110 SG128 T75 D104 MA116 Z107 NG52

05  9 16 49 2025 -17.7  168.4 4.7 VANUATU                        M81 SG51 T16 D92 MA37 Z30 NG103

05  9 16 26 2025  18.8  145.8 4.3 PAGAN REG., N. MARIANA ISLANDS M46 SG82 T55 D134 MA73 Z68 NG67

05  9 16 11 2025  31.6 -104.2 2.3 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05  9 16 04 2025  34.5 -119.5 2.3 SOUTHERN CALIFORNIA            M114 SG127 T75 D100 MA114 Z106 NG56

05  9 15 50 2025  -8.2  -74.4 4.0 CENTRAL PERU                   M163 SG104 T95 D48 MA105 Z103 NG101

05  9 15 33 2025  32.1 -101.1 2.5 WESTERN TEXAS                  M123 SG133 T86 D92 MA123 Z115 NG60

05  9 15 17 2025 -12.4  166.8 5.1 SANTA CRUZ ISLANDS             M77 SG55 T20 D97 MA42 Z35 NG98

05  9 14 44 2025  63.2 -150.2 3.4 CENTRAL ALASKA                 M80 SG138 T85 D135 MA124 Z116 NG25

05  9 13 41 2025  34.0 -117.6 2.2 GREATER LOS ANGELES AREA, CALI M115 SG127 T76 D99 MA115 Z106 NG57

05  9 13 37 2025  24.8   95.3 4.3 MYANMAR                        M2 SG93 T98 D145 MA93 Z95 NG62

05  9 13 31 2025 -20.9  -65.3 4.4 CHUQUISACA, BOLIVIA            M162 SG94 T99 D35 MA97 Z97 NG114

05  9 13 17 2025  54.7  164.5 4.4 KOMANDORSKIYE OSTROVA REGION   M60 SG120 T76 D150 MA108 Z102 NG31

05  9 13 14 2025  -4.3  123.4 4.7 BANDA SEA                      M37 SG59 T62 D118 MA55 Z56 NG90

05  9 12 37 2025 -13.3  167.9 4.3 VANUATU                        M78 SG55 T18 D96 MA42 Z34 NG99

05  9 12 14 2025  31.7 -104.5 2.6 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05  9 12 02 2025  50.9  173.8 3.8 SOUTH OF ALEUTIAN ISLANDS      M65 SG118 T71 D144 MA105 Z98 NG35

05  9 11 56 2025  35.6 -117.5 2.3 SOUTHERN CALIFORNIA            M114 SG128 T77 D101 MA116 Z108 NG55

05  9 10 40 2025  13.6  124.8 4.5 CATANDUANES, PHILIPPINES       M28 SG77 T69 D135 MA72 Z71 NG72

05  9 10 18 2025  20.0  -70.6 4.3 DOMINICAN REPUBLIC REGION      M136 SG132 T108 D76 MA131 Z127 NG73

05  9 10 06 2025  27.7 -111.7 3.5 GULF OF CALIFORNIA             M123 SG124 T76 D91 MA113 Z105 NG63

05  9 10 05 2025  37.5   72.2 4.0 TAJIKISTAN                     M25 SG112 T120 D147 MA115 Z118 NG51

05  9 09 50 2025 -53.2  140.1 4.6 WEST OF MACQUARIE ISLAND       M84 SG10 T48 D67 MA8 Z16 NG138

05  9 09 29 2025  32.1 -101.1 2.0 WESTERN TEXAS                  M123 SG133 T86 D92 MA123 Z115 NG60

05  9 08 37 2025  20.9   96.0 4.4 MYANMAR                        M1 SG89 T97 D142 MA90 Z92 NG66

05  9 03 13 2025  39.9  -81.5 2.9 OHIO                             M118 SG147 T104 D96 MA140 Z132 NG53

 

May 9, 2025

 

Notable earthquakes:

 

Mongolia M 4.2 event occurred near the antipode of the M 7.4 in Drake Passage of May 2, 2025 - largest in half a year in the antipodal area.

Occurred during C7 Solar flare.

Macquarie Island M 5.6 near sixth node from Drake Passage (60 degrees)

Southeast of Easter Island M 5.4 at exactly 120.0 degrees (node 3) from Myanmar

 

MONGOLIA:

 

An earthquake of M 4.5 was felt in Mongolia today. EMSC reported moderate shaking

in Ulan Bator, Mongolia. This is the strongest earthquake within about 500 km

of this epicenter in the past six months. This is near the antipode of the M 7.4 in

the Drake Passage of May 2 and may have been promoted by energy from that source.

It occurred at the tail end of solar flare

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

1930       1348   1356      1359   C6.4      (May 8, 2025)   2.5E-03  

Carlsberg Ridge M 4.7 13:50 UT

Eastern Mongolia M 4.5 14:23 UT

 

 

O: 07MAY2025 14:23:19 48.8N 109.1E ML=4.5  EMSC   Mongolia

P: 02MAY2025 171816   45.0N 102.0E 4.0-5.4 BCCAA  Gulf of California    

 

 

An earthquake of M 2.9 occurred today in eastern Ohio. NEIC reported it was felt with intensity up to IV in Ohio at Byesville, Caldwell and Pleasant City with III in Cumberland, Lore City, Quaker City, Senecaville, Wellston and Athens and II in Cambridge, Painesville and Canton.

The continues light seismicity in the area since early May 2025.

 

O: 09MAY2025 03:13:43 39.9N  81.4W ML=2.9  EMSC   Ohio      

P: 02MAY2025 171816   40.0N  81.0W 2.0-3.9 BAAAA  Ohio/Lake Erie        

 

NEIC reported an earthquake of M 2.6 in the Geysers of California was felt with  intensity up to II-III in the area(s) of the Geysers of California with III in Pleasant Hill and II in Roseville and Marysville.

 

 

NEIC reported an earthquake of M 3.6 off the coast of Northern California  was felt with  intensity up to II-III in the area(s) of Northern California with III in Arcata and II in McKinleyville.

 

 

NEIC reported an earthquake of M 3.2 in Western Texas was felt with  intensity up to II-III in the area(s) of Western Texas at Westbrook.

 

NEIC reported an earthquake of M 3.1 in Kenai, Alaska was felt with  intensity up to II-III in the area(s) of with III in Eagle River and II in Fort Richardson.

 

NEIC reported an earthquake of M 2.9 in San Francisco, California was felt with  intensity up to II-III in the area(s) of San Francisco, California with III in Burlingame, Fremont, Hayward, Newark, Pleasanton, Union City, and II in Mountain View, San Francisco, Alameda, Danville, Castro Valley, Livermore, Pleasanton, Oakland and Chico.

 

NEIC reported an earthquake of M 5.4 in Ecuador/Peru was felt with  intensity up to II-III in the area(s) of Ecuador/Peru at Papayal, Tumbes, Peru (VI), and III in Ecuador at Loja, Pinas, El Oro and Cuenca Azuay and in Lambayeque, Peru.

EMSC reported moderate shaking in Guayaquil, Ecuador.

 

NEIC reported an earthquake of M 4.8 in Vanuatu was felt with  intensity up to II-III in the area(s) of Vanuatu at Vila Shefa.

EMSC reported moderate shaking in Efate, Vanuatu.

 

NEIC reported an earthquake of M 2.7 in Northern California was felt with  intensity up to II-III in the area(s) of Northern California in Norden and II in Glenbrook, Nevada.

 

NEIC reported an earthquake of M 3.0 in Western Texas was felt with  intensity up to II-III in the area(s) of Western Texas at Lubbock and Midland.

 

NEIC reported an earthquake of M 4.9 in the Solomon Islands was felt with  intensity up to II-III in the area(s) of the Solomon Islands at Honiara Guadalcanal.

 

NEIC reported an earthquake of M 2.6 in Los Angeles, California was felt with  intensity up to II-III in the area(s) of Los Angeles, California at Eastvale.

 

GeoNet reported the following parameters for an event in South Island, New Zealand today.

 

O: 09MAY2025 04:44:15 42.8S 171.4E MS=4.2  GEONET Felt with moderate intensity in the area northeast of Arthur's Pass, South Island, New Zealand. 69 reports of light to moderate intensity came from the area of southern North Island and Wellington and northern South Island, New Zealand with 52 reporting weak, 14 light and 3 moderate shaking.

 

EMSC reported an earthquake of M 4.2 in Myanmar was felt with  intensity up to IV in the area(s) of Myanmar at Mandalay, Mahaaungmye and Aungmyaythazan.

 

 

No Tropical Cyclones are currently active.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

1780       0156   0203      0212   C3.3      (May 8, 2025)   6.4E-04  

1810       0326   0333      0337   C3.9      (May 8, 2025)   9.6E-04  

Antofagasta M 4.4 03:41 UT

 

1840       0636   0643      0647   C2.2      (May 8, 2025)   9.4E-04  

1850       0654   0717      0735   C3.6      (May 8, 2025)   7.3E-03  

Chiapas M 4.0 07:12 UT

 

1890       0935   0942      0944   C1.5      (May 8, 2025)   8.3E-04  

1900       1016   1024      1027   C1.6      (May 8, 2025)   1.0E-03  

1910       1128   1141      1147   C7.0      (May 8, 2025)   4.9E-03  

1930       1348   1356      1359   C6.4      (May 8, 2025)   2.5E-03  

Carlsberg Ridg M 4.7 13:50 UT

Eastern Mongolia M 4.5 14:23 UT

 

1940       1454   1500      1523   C7.0      (May 8, 2025)   9.8E-03  

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:  minor storms May 9 active May 10-11.  Solar M-flare chance: 40% X-class: 5% proton storm: 5%

The current geomagnetic storm continued today reaching a peak at high latitude

with kp 7 around 08:30 UT.

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)    12 30 11 18:00 6   84 149

 

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the North and South Geomagnetic poles due to the geomagnetic

storm today.

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

 

 

05  9 08 37 2025  20.9   96.0 4.4 MYANMAR                        M1 SG89 T97 D142 MA90 Z92 NG66

05  9 06 01 2025  38.8 -122.8 2.6 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05  9 03 30 2025  36.2  -89.4 2.1 TENNESSEE                      M121 SG141 T97 D94 MA132 Z125 NG56

05  9 03 13 2025  39.9  -81.5 2.9 OHIO                           M118 SG147 T104 D96 MA140 Z132 NG53

05  9 02 22 2025  15.3  -94.6 4.0 OFF COAST OF OAXACA, MEXICO    M141 SG120 T85 D75 MA114 Z108 NG77

05  9 01 52 2025 -18.9   65.6 4.7 MAURITIUS - REUNION REGION     M50 SG64 T109 D95 MA74 Z82 NG107

05  9 01 41 2025  34.6   93.1 4.1 SOUTHERN QINGHAI, CHINA        M12 SG103 T103 D154 MA103 Z104 NG52

05  9 00 48 2025  18.1   96.8 4.2 MYANMAR                        M3 SG86 T95 D139 MA87 Z89 NG68

05  8 23 06 2025  40.3 -111.4 2.3 UTAH                           M113 SG135 T83 D103 MA123 Z114 NG51

05  8 22 50 2025  17.4 -102.6 3.9 OFFSHORE MICHOACAN, MEXICO     M136 SG119 T79 D79 MA111 Z104 NG74

05  8 22 18 2025  13.8  -92.1 4.3 OFFSHORE GUATEMALA             M143 SG120 T87 D73 MA114 Z108 NG79

05  8 22 09 2025  36.5 -115.0 2.0 NEVADA                         M114 SG130 T79 D101 MA118 Z110 NG54

05  8 21 56 2025  62.8 -149.6 3.4 CENTRAL ALASKA                 M81 SG138 T85 D134 MA124 Z116 NG26

05  8 20 52 2025  35.3   71.2 4.3 HINDU KUSH REGION, AFGHANISTAN M25 SG110 T121 D145 MA114 Z117 NG53

05  8 19 42 2025  44.1  147.3 4.0 KURIL ISLANDS                  M47 SG107 T73 D154 MA98 Z93 NG41

05  8 19 29 2025  60.8 -150.3 3.0 KENAI PENINSULA, ALASKA        M81 SG136 T83 D133 MA122 Z114 NG28

05  8 19 08 2025  55.0 -156.4 3.0 SOUTH OF ALASKA                M81 SG129 T76 D132 MA115 Z107 NG33

05  8 18 47 2025  31.4 -115.6 3.2 BAJA CALIFORNIA, MEXICO        M118 SG126 T75 D96 MA114 Z106 NG59

05  8 18 29 2025  32.3 -103.2 3.1 NEW MEXICO                     M123 SG132 T85 D93 MA122 Z114 NG59

05  8 17 26 2025  12.8  -88.6 4.1 OFFSHORE EL SALVADOR           M145 SG120 T90 D71 MA115 Z110 NG80

05  8 16 44 2025  51.8 -174.9 3.9 ANDREANOF ISLANDS, ALEUTIAN IS M72 SG121 T71 D138 MA108 Z101 NG35

05  8 16 15 2025  13.6  120.1 4.2 MINDORO, PHILIPPINES           M24 SG78 T73 D136 MA73 Z73 NG72

05  8 15 45 2025  37.6 -122.0 2.2 SAN FRANCISCO BAY AREA, CALIF. M110 SG128 T75 D104 MA115 Z107 NG53

05  8 15 17 2025  37.6 -122.0 2.8 SAN FRANCISCO BAY AREA, CALIF. M110 SG128 T75 D104 MA115 Z107 NG53

05  8 15 07 2025  33.2 -116.7 2.1 SOUTHERN CALIFORNIA            M116 SG127 T76 D98 MA115 Z106 NG58

05  8 14 48 2025  33.2 -116.7 2.2 SOUTHERN CALIFORNIA            M116 SG127 T76 D98 MA115 Z106 NG58

05  8 14 38 2025  -4.2  128.8 4.0 BANDA SEA                      M41 SG59 T57 D117 MA54 Z53 NG89

05  8 14 26 2025 -56.8  -68.4 4.3 DRAKE PASSAGE                  M143 SG58 T81 D0 MA63 Z66 NG150

05  8 13 59 2025  19.2  -67.6 3.3 PUERTO RICO REGION             M135 SG132 T111 D75 MA132 Z128 NG74

05  8 13 14 2025  19.2  -66.4 3.0 PUERTO RICO REGION             M135 SG133 T112 D75 MA132 Z129 NG74

05  8 12 15 2025  -2.7  139.4 4.1 NEAR N COAST OF PAPUA, INDONES M49 SG61 T48 D116 MA52 Z50 NG88

05  8 10 53 2025 -17.7  168.0 4.8 VANUATU                        M80 SG51 T17 D92 MA37 Z30 NG103

05  8 09 58 2025  31.0 -115.0 3.0 BAJA CALIFORNIA, MEXICO        M119 SG126 T76 D96 MA114 Z106 NG60

05  8 09 15 2025  35.2   57.2 4.0 NORTHEASTERN IRAN              M36 SG115 T132 D137 MA121 Z126 NG54

05  8 08 27 2025  -4.6  127.1 4.4 BANDA SEA                      M40 SG59 T59 D117 MA54 Z54 NG90

05  8 08 16 2025 -19.6 -173.0 4.9 TONGA REGION                   M98 SG56 T1 D81 MA42 Z33 NG106

05  8 07 38 2025  21.6   96.2 4.1 MYANMAR                        M0 SG90 T97 D142 MA90 Z92 NG65

05  8 07 27 2025  39.3 -120.4 2.4 NORTHERN CALIFORNIA            M110 SG130 T77 D105 MA117 Z109 NG51

 

May 8, 2025

 

Notable earthquakes:

 

West of northern Baja California, Mexico - an M 4.1 was the strongest quake within about 200 km of this epicenter in at least 35 years.

Off coast of northern California an earthquake of M 3.9, felt in No. California

 

WEST OF BAJA CALIFORNIA

 

A highly unusual earthquake of M 4.1 was recorded today in the area west of the northern Baja California region of Mexico.

It was not reported felt in this remote area WSW of El Vergel, Mexico. The last

earthquake within about 150 km of this epicenter with equal or larger magnitude

occurred more than 35 years ago. An M 5.2 occurred about 150 km southeast of

today's epicenter on August 30, 2004. At the time this summary noted:

 

"An earthquake of M 5.2 occurred offshore of the Northern Baja California

of Mexico on August 30. This is the largest earthquake located in this area

(27-32N 114-118W) since an event of M 5.2 which occurred on May 22, 1992 in the

same general region. The last events which were probably larger than this

in the region occurred in Dec. 1976 with M 5.7, but far to the east. This may

be the strongest event within 100 km since Sept. 13, 1975 when an M 5.4

was recorded in the general area." (August 30, 2004)

 

Rare events such as this can indicate an area under considerable strain and near

a larger regional earthquake. Two earthquakes of M>=6 have occurred in the

past 35 years in this general area west of northern Baja. These occurred about 250

km northwest of today's epicenter on December 14, 2012 and more recently as an M 6.2

on November 22, 2022. This event has been followed by a strong series of aftershocks

which still continues at a lesser frequency. The event of December 14, 2012

was described in this summary at the time as:

 

 

"The only moderate earthquake to hit this area in the past 22 years was an M 5.0 on July 9, 1998. As the

earthquake occurred near the time of maximum astronomical tides, tidal triggering

of this earthquake is a distinct possibility. No earthquakes of this size

have previously been identified in this region off the coast of California.

the closest may have been an M 6.0 on September 4, 1981 of M 6.0 or an M 7.0

on December 21, 1812. In the earthquake of September 4, 1981 some windows were broken and alarms

and telephone service was interrupted. Today's event is further off the coast

than that of 1981 and could be expected to do even less damage. This may not

be the end of the seismicity for California however, as large earthquakes

in the region often cluster in time." (December 14, 2012)

 

and

 

"The strong earthquake of M 6.3-6.4 off the coast of Southern and Baja California

today apparently triggered a second strong earthquake in the Near Islands,

Aleutians, Alaska early on December 15. It is not immediately obvious that

the earthquake in the Aleutians at the westernmost edge of the United States

was triggered from effects from California but the distance between these

two events 51.5 degrees is a giveaway. This is precisely the seventh node -

(360/7 = 51.43 degrees). As this is a distance at which ground motion from

large earthquakes is enhanced, it is highly likely that there is a triggering

relation between the two." (December 15, 2012)

 

This epicenter is at the third node (120 degrees) from the M 7.7 in Myanmar of

March 28 and 103 degrees from the M 6.8 in New Zealand of March 25. It is also at the

sixth node from the North Geomagnetic Pole and may have been promoted by

energy from these sources. The earthquake occurred near local solar noon.

 

Forecast 172002 had expected regional seismic enhancement around May 6.

 

O: 07MAY2025 21:42:00 29.6N 118.1W ML=4.1  ANSS   W. of Northern Baja California, Mexico

P: 06MAY2025 172002   28.0N 112.0W 3.5-5.0 ABDAA  Gulf of California    

 

OFF COAST OF NORTHERN CALIFORNIA

 

An earthquake of M 3.9 was reported off the coast of northern California today. NEIC reported it was felt with intensity IV in Northern California at Fortuna; III in Whitethorn, and II in Eureka, Ferndale, Hydesville and Loleta, California.

The last earthquake within about 150 km of this epicenter with M>=3.9

occurred as an M 4.2 on April 24, 2025 and prior to that a major quake shook

the area on December 5, 2024 with M 7.0-7.1. Today's event may be an aftershock

of that. At the time this summary noted:

 

 

"A major earthquake of M 7.0-7.3 occurred on December 5, 2024 near local noon off the coast of Northern California." (December 5, 2024)

 

Like the event in December, 2024 today's earthquake also occurred within minutes

of local solar noon and may have been promoted by tidal and/or geomagnetic

effects which maximize near this hour.

 

This epicenter is at 107 degrees from recent strong earthquakes in Myanmar, Drake Passage

and New Zealand and at the seventh node (51 degrees) from the North Geomagnetic pole and

may have been promoted by energy from these sources.

 

Forecast 172102 had expected this event was likely around May 9, 2025.

 

O: 07MAY2025 20:50:49 40.4N 125.0W ML=3.9  ANSS   Off coast of Northern California, Mexico

P: 09MAY2025 172102   40.5N 125.8W 2.5-4.5 AAAAA  Off coast of No. California

 

NEIC reported an earthquake of M 3.0 in Malibu, California was felt with  intensity up to II-III in the area(s) of Malibu, California with III in Los Angeles.

 

NEIC reported an earthquake of M 2.7 in Northern California was felt with  intensity up to II-III in the area(s) of Northern California in Magalia.

 

NEIC reported an earthquake of M 4.5 in Tanzania was felt with  intensity up to II-III in the area(s) of Tanzania with III in Machakos, Kenya and II in Arusha, Tanzania and II in Kenya at Nairobi and Kiambu.

EMSC reported moderate shaking in Starehe, Kenya. Kenya government reports indicated this quake was widely felt in the area of Nairobi.

 

NEIC reported an earthquake of M 4.4 in northern Chile was felt with  intensity up to II-III in the area(s) of northern Chile with III in Iquique, Tarapaca.

 

NEIC reported an earthquake of M 5.4 in Ecuador/Peru was felt with  intensity up to II-III in the area(s) of Ecuador/Peru at Loja, Ecuador.

 

NEIC reported an earthquake of M 4.8 in Vanuatu was felt with  intensity up to II-III in the area(s) of Vanuatu at Vila Shefa.

 

NEIC reported an earthquake of M 2.7 in Northern California was felt with  intensity up to II-III in the area(s) of Northern California in Norden and II in Glenbrook, Nevada.

 

NEIC reported an earthquake of M 3.0 in Western Texas was felt with  intensity up to II-III in the area(s) of Western Texas at Lubbock and Midland.

 

NEIC reported an earthquake of M 4.9 in the Solomon Islands was felt with  intensity up to II-III in the area(s) of the Solomon Islands at Honiara Guadalcanal.

 

PHIVOLCS reported an earthquake of M 4.9 in Samar, Philippines was felt with  intensity up to IV in the area(s) of Samar, Philippines with II in Northern Samar at Mapanas, Gamay, Lapinig, Laoang and Palapag.

 

No Tropical Cyclones are currently active.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

1390       0147   0150      0155   C1.6      (May 7, 2025)   8.1E-04  

1400       0212   0216      0219   C1.5      (May 7, 2025)   4.6E-04  

Kyushu M 4.6 02:15 UT

 

1410       0244   0252      0259   C4.0      (May 7, 2025)   2.6E-03  

1440       0500   0510      0514   C2.9      (May 7, 2025)   1.7E-03  

1470       0647   0653      0656   C1.2      (May 7, 2025)   6.9E-04  

1490       0710   0714      0725   C1.2      (May 7, 2025)   1.1E-03  

Nias, Indonesia M 5.3 07:09 UT

Papua, Indonesia M 4.0 07:22 UT

Tanzania M 4.5 07:35 UT

 

1500       0951   1001      1010   C1.7      (May 7, 2025)   3.6E-04  

1510       1021   1027      1031   C1.1      (May 7, 2025)   6.5E-04  

1530       1200   1208      1215   C1.7      (May 7, 2025)   5.7E-04      

1540       1223   1228      1233   C2.4      (May 7, 2025)   1.3E-03      

1660       1623   1631      1638   C1.4      (May 7, 2025)   6.8E-04  

Los Angeles, CA M 2.9 16:33 UT

 

1680       1742   1751      1757   C2.7      (May 7, 2025)   1.9E-03      

Biak, Indonesia M 4.9 17:49 UT

 

1700       1855   1904      1908   C3.2      (May 7, 2025)   1.7E-03  

Mid-Indian Ridge M 4.9 18:51 UT

 

1720       1953   2009      2029   C1.6      (May 7, 2025)   3.3E-03  

1750       2320   2326      2331   C1.9      (May 7, 2025)   1.3E-03  

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:  unsettled May 8 minor storms May 9 active May 10.  Solar M-flare chance: 45% X-class: 5% proton storm: 5%

The current geomagnetic storm continued today reaching a peak at high latitude

with kp 7 around 08:30 UT.

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)     9 16  8 08:00 5   84 154

 

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the North and South Geomagnetic poles due to the geomagnetic

storm today.

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05  8 10 53 2025 -17.7  167.9 4.9 VANUATU                        M80 SG51 T17 D92 MA37 Z30 NG103

05  8 10 23 2025  40.2 -124.6 2.7 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05  8 09 33 2025  -8.1  128.7 4.2 TIMOR SEA                      M43 SG55 T56 D113 MA50 Z50 NG93

05  8 09 15 2025  35.2   57.2 4.0 NORTHEASTERN IRAN              M36 SG115 T132 D137 MA121 Z126 NG54

05  8 08 58 2025 -35.0 -103.7 5.1 SOUTHEAST OF EASTER ISLAND     M158 SG71 T62 D32 MA68 Z65 NG126

05  8 08 27 2025  -4.6  127.2 4.2 BANDA SEA                      M40 SG59 T59 D117 MA54 Z54 NG90

05  8 08 17 2025  19.9  -73.5 3.0 HAITI REGION                   M137 SG132 T106 D76 MA129 Z125 NG73

05  8 08 16 2025 -19.5 -173.2 4.9 TONGA                          M97 SG56 T1 D81 MA42 Z33 NG106

05  8 07 53 2025  35.2   57.2 4.3 NORTHEASTERN IRAN              M36 SG115 T132 D137 MA121 Z126 NG54

05  8 07 38 2025  21.6   96.2 4.1 MYANMAR                        M0 SG90 T97 D142 MA90 Z92 NG65

05  8 07 36 2025 -57.2  -67.1 4.7 DRAKE PASSAGE                  M142 SG58 T81 D0 MA63 Z66 NG150

05  8 07 27 2025  39.3 -120.4 2.5 NORTHERN CALIFORNIA            M110 SG130 T77 D105 MA117 Z109 NG51

05  8 07 12 2025  15.0  -93.7 4.0 OFFSHORE CHIAPAS, MEXICO       M142 SG120 T86 D74 MA114 Z108 NG77

05  8 06 43 2025  35.4 -117.8 2.1 SOUTHERN CALIFORNIA            M114 SG128 T76 D100 MA116 Z107 NG55

05  8 06 06 2025  64.8  -21.9 3.6 ICELAND                        M81 SG169 T131 D126 MA169 Z162 NG29

05  8 05 23 2025  35.7   57.1 4.5 NORTHEASTERN IRAN              M36 SG116 T132 D138 MA122 Z126 NG54

05  8 04 57 2025  38.0 -119.0 2.0 CENTRAL CALIFORNIA             M111 SG130 T77 D103 MA117 Z109 NG53

05  8 04 51 2025  33.3 -116.3 2.3 SOUTHERN CALIFORNIA            M117 SG127 T76 D98 MA115 Z107 NG58

05  8 04 42 2025  14.3  -61.1 4.0 MARTINIQUE REGION, WINDWARD IS M137 SG129 T115 D71 MA131 Z129 NG79

05  8 03 41 2025 -23.2  -69.3 4.4 ANTOFAGASTA, CHILE             M166 SG91 T94 D33 MA94 Z93 NG116

05  8 03 16 2025 -60.6  -26.7 4.6 SOUTH SANDWICH ISLANDS REGION  M124 SG55 T95 D21 MA65 Z71 NG154

05  8 03 12 2025  13.9  -92.5 4.0 OFFSHORE GUATEMALA             M143 SG120 T86 D73 MA114 Z108 NG78

05  8 02 55 2025  39.1   70.7 4.7 TAJIKISTAN                     M27 SG114 T121 D147 MA117 Z120 NG49

05  8 00 37 2025  32.3 -101.2 3.0 WESTERN TEXAS                  M123 SG133 T86 D93 MA123 Z115 NG60

05  8 00 36 2025 -57.0  -67.1 4.8 DRAKE PASSAGE                  M142 SG58 T81 D0 MA63 Z66 NG150

05  8 00 25 2025  52.8  159.5 4.5 OFF EAST COAST OF KAMCHATKA    M56 SG117 T76 D152 MA106 Z100 NG33

05  8 00 16 2025  52.8  159.1 4.7 OFF EAST COAST OF KAMCHATKA    M56 SG117 T76 D152 MA106 Z100 NG33

05  8 00 00 2025 -31.1  -72.9 4.1 OFF COAST OF COQUIMBO, CHILE   M166 SG82 T88 D25 MA85 Z85 NG124

05  7 23 38 2025  48.0 -123.1 2.1 OLYMPIC PENINSULA, WASHINGTON  M102 SG136 T81 D113 MA122 Z114 NG42

05  7 23 11 2025 -22.6   69.3 5.0 MID-INDIAN RIDGE               M51 SG59 T105 D93 MA69 Z77 NG110

05  7 23 09 2025  -9.3  159.2 4.9 SOLOMON ISLANDS                M69 SG57 T28 D103 MA44 Z39 NG95

05  7 23 04 2025 -19.3  -67.9 4.5 ORURO, BOLIVIA                 M164 SG95 T97 D37 MA98 Z97 NG113

05  7 22 37 2025  28.0 -112.2 3.3 GULF OF CALIFORNIA             M123 SG124 T76 D92 MA113 Z105 NG63

05  7 22 34 2025 -20.8 -178.3 4.5 FIJI REGION                    M93 SG53 T4 D83 MA39 Z30 NG107

05  7 22 33 2025  28.0 -112.2 3.3 GULF OF CALIFORNIA             M123 SG124 T76 D92 MA113 Z105 NG63

05  7 22 16 2025  28.0 -112.2 3.4 GULF OF CALIFORNIA             M123 SG124 T76 D92 MA113 Z105 NG63

05  7 21 42 2025  29.6 -118.1 4.0 OFF W. COAST OF BAJA CALIFORNI M119 SG123 T73 D95 MA111 Z103 NG61

05  7 20 50 2025  40.4 -125.0 3.9 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D108 MA116 Z107 NG50

05  7 20 50 2025  40.4 -125.0 3.6 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D108 MA116 Z107 NG50

05  7 19 04 2025  32.3 -102.2 2.2 WESTERN TEXAS                  M123 SG132 T86 D93 MA122 Z115 NG60

05  7 18 51 2025 -34.8   78.7 4.9 MID-INDIAN RIDGE               M58 SG44 T92 D84 MA54 Z62 NG122

05  7 18 47 2025 -57.3  -67.8 4.5 DRAKE PASSAGE                  M142 SG57 T81 D0 MA63 Z66 NG150

05  7 17 49 2025  -1.8  136.3 4.9 BIAK REGION, INDONESIA         M45 SG61 T51 D118 MA54 Z52 NG87

05  7 17 28 2025  31.7 -104.5 2.0 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05  7 17 09 2025  80.4    0.8 4.5 NORTH OF SVALBARD              M69 SG159 T119 D142 MA152 Z147 NG13

05  7 17 02 2025  41.9 -119.6 2.1 NEVADA                         M108 SG133 T79 D107 MA120 Z111 NG49

05  7 16 51 2025  35.3 -117.8 2.3 SOUTHERN CALIFORNIA            M114 SG128 T76 D100 MA116 Z107 NG55

05  7 16 33 2025  34.0 -118.7 2.9 SANTA MONICA BAY, CALIFORNIA   M115 SG126 T75 D100 MA114 Z106 NG57

05  7 16 19 2025  33.5 -116.7 2.2 SOUTHERN CALIFORNIA            M116 SG127 T76 D98 MA115 Z107 NG57

05  7 16 18 2025 -38.9  142.7 2.8 NEAR S.E. COAST OF AUSTRALIA   M74 SG25 T41 D81 MA17 Z18 NG124

05  7 16 18 2025  31.4 -103.9 2.1 WESTERN TEXAS                  M123 SG131 T84 D92 MA121 Z113 NG60

05  7 16 03 2025  -6.1  151.9 4.6 NEW BRITAIN REGION, P.N.G.     M61 SG58 T36 D109 MA48 Z43 NG91

05  7 14 58 2025  71.0   -6.4 4.6 JAN MAYEN ISLAND REGION        M73 SG163 T128 D134 MA161 Z156 NG22

05  7 14 44 2025   0.9  126.2 4.7 MOLUCCA SEA                    M36 SG64 T62 D123 MA59 Z59 NG84

05  7 14 30 2025  54.4 -158.8 4.9 SOUTH OF ALASKA                M80 SG128 T75 D132 MA114 Z106 NG33

05  7 14 06 2025  41.8 -112.8 2.4 UTAH                           M111 SG136 T83 D105 MA123 Z115 NG49

05  7 13 50 2025  78.0   11.1 3.6 SVALBARD REGION                M67 SG158 T122 D142 MA152 Z148 NG15

05  7 13 23 2025  37.3 -114.7 3.0 NEVADA                         M114 SG131 T79 D101 MA119 Z111 NG54

05  7 13 05 2025  19.2  -64.9 3.1 VIRGIN ISLANDS REGION          M134 SG133 T113 D75 MA133 Z130 NG74

05  7 12 45 2025  32.5 -101.1 2.3 WESTERN TEXAS                  M123 SG133 T87 D93 MA123 Z115 NG59

05  7 11 28 2025  -9.9  151.8 4.7 D'ENTRECASTEAUX ISLANDS REGION M63 SG55 T34 D105 MA44 Z39 NG95

05  7 11 01 2025  10.3  -86.3 4.3 OFF COAST OF COSTA RICA        M147 SG119 T91 D68 MA114 Z110 NG82

05  7 10 56 2025 -14.7   66.5 4.7 MID-INDIAN RIDGE               M46 SG67 T111 D99 MA77 Z84 NG103

05  7 10 50 2025  30.0  131.1 4.4 KYUSHU, JAPAN                  M32 SG93 T72 D149 MA86 Z83 NG55

05  7 10 46 2025  31.4 -115.5 3.3 BAJA CALIFORNIA, MEXICO        M118 SG126 T76 D96 MA114 Z106 NG60

05  7 10 45 2025  63.5 -151.1 3.7 CENTRAL ALASKA                 M80 SG138 T85 D135 MA124 Z116 NG25

05  7 10 00 2025  31.4 -115.6 3.1 BAJA CALIFORNIA, MEXICO        M118 SG126 T75 D96 MA114 Z106 NG59

05  7 09 56 2025  32.1 -101.1 2.2 WESTERN TEXAS                  M123 SG133 T86 D92 MA123 Z115 NG60

05  7 09 46 2025  30.8 -114.3 3.4 GULF OF CALIFORNIA             M120 SG126 T76 D95 MA114 Z106 NG60

05  7 09 36 2025  13.0  125.1 4.7 PHILIPPINE ISLANDS REGION      M29 SG76 T68 D135 MA71 Z70 NG72

05  7 09 35 2025  31.6 -104.4 2.0 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05  7 09 31 2025  12.8  125.2 4.2 SAMAR, PHILIPPINES             M29 SG76 T68 D134 MA71 Z70 NG73

05  7 08 36 2025  69.6 -144.4 3.4 NORTHERN ALASKA                M79 SG144 T92 D137 MA131 Z123 NG19

05  7 08 18 2025  15.5  -94.4 4.0 OFFSHORE OAXACA, MEXICO        M141 SG121 T85 D75 MA114 Z108 NG77

05  7 08 10 2025  40.3 -122.1 2.7 NORTHERN CALIFORNIA            M108 SG130 T77 D106 MA117 Z109 NG50

05  7 07 40 2025 -33.9 -179.9 4.8 SOUTH OF KERMADEC ISLANDS      M97 SG40 T14 D72 MA26 Z18 NG120

05  7 07 35 2025  18.6   96.6 4.0 MYANMAR                        M3 SG87 T95 D140 MA87 Z90 NG68

05  7 07 35 2025  -2.6   36.0 4.5 TANZANIA                       M63 SG91 T142 D95 MA104 Z112 NG93

05  7 07 22 2025  -3.8  140.2 4.0 PAPUA, INDONESIA               M50 SG59 T47 D115 MA51 Z49 NG89

05  7 07 09 2025   0.9   97.5 5.3 NIAS REGION, INDONESIA         M21 SG70 T88 D123 MA72 Z75 NG85

 

May 7, 2025

 

NOTEWORTHY EARTHQUAKES:

 

Central East Pacific Rise M 5.8 - at 60.0 degrees from Drake Passage

Vanuatu M 5.5 - at 90.0 degrees from Drake Passage

Virginia M 3.0 - felt throughout central Virginia with intensity V. Strongest since 2014.

Morocco M 4.2 - widely felt at 101-102 degrees from Drake Passage

 

CENTRAL EAST PACIFIC RISE:

 

The strongest earthquake in the world today was an M 5.8 in the central East Picific Ridge. It was not reported felt i this remote area.

The last earthquake in the Central East Pacific Rise within about 200 km of

today's epicenter with M>=5.8 occurred on July 12, 2024 also with M 5.8. Seven

earthquake have occurred in this area in the past 35 years with M 6.0-6.2 but

none of larger magnitude.

 

This earthquake is at the sixth node (60 degrees) from te Drake Passage event of May 2, 2025 (M 7.4) and

was likely promoted by energy from that source. This event occurred within minutes

of local solar noon with a C-class solar flare (#1280 C1.6) and was probably promoted by

energy from those sources as well. SWPC data for this flare follow:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

1280       1809   1814      1818   C1.6      (May 6, 2025)   9.4E-04  

Central East Pacific Rise M 5.8 18:15 UT

 

Forecast 171962 had expected today's event in the East Pacific Rise was likely

within about 100 km around May 2.

 

O: 06MAY2025 18:15:10  4.0S 104.4W ML=5.8  ANSS   Central East Pacific Rise

P: 02MAY2025 171962    5.0S 105.0W 4.0-5.5 AAAAA  no. East Pacific Rise

 

VANUATU:

 

An earthquake of M 5.5 occurred about half an hour prior to the M 5.8 in the East Pacific. This earthquake in Vanuatu is located

at the fourth node (90 degrees) from the Drake Passage and was likely promoted

by energy from that source.

 

This earthquake in Vanuatu occurred near the height of solar flare 1260 - an C1.6 flare -

and was probably promoted by SFE from that source given by SWPC as:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

1260       1742   1750      1755   C1.6      (May 6, 2025)   5.1E-04  

Vanuatu M 5.5 17:45 UT

 

The last earthquake within about 200 km of this event in Vanuatu with M>=5.5

was recorded on January 1, 2025 with M 5.6 and was accompanied by the

last geomagnetic storm with Ap greater the the current values of this index.

At the time this summary noted:  

 

"The strongest earthquake in the world today was an M 5.6 in southern Vanuatu and the Loyalty Islands. NEIC did not report this earthquake was felt. It does not

appear to be an aftershock of the M 7.4 in Vanuatu of December 17 as it occurred

nearly 300 km south of that earlier epicenter. An earlier Vanuatu earthquake of M 4.8 (which was an aftershock

of the December 17 event) occurred today with M 4.4. NEIC reported this earthquake was felt with intensity III in Vila Shefa, Vanuatu.

 

and

 

This geomagnetic storm reached maximum KP of 8 within about an hour of local solar noon in California

and probably helped trigger today's earthquake in northern California. High

latitude AP reached index of 113 on January 1 with middle latitude AP 48 and

Planetary index of 86. This is the strongest geomagnetic storm since AP reached 116 on October 11, 2024

with middle latitude AP of 123." (January 1, 2025)

 

Forecast 172181 had expected today's event in Vanuatu was likely

within about 50 km around May 3.

 

O: 06MAY2025 17:45:32 20.0S 169.4E ML=5.5  ANSS   Vanuatu               

P: 03MAY2025 172181   20.0S 169.0E 4.0-5.4 BAAAA  Vanuatu   

 

VIRGINIA:

 

An unusual earthquake of M 3.0 also shook the area of western Virginia today. NEIC reported this earthquake was felt with intensity V in Virginia at Keswick with IV at Arlington, Arvonia, Diswell, Dillwyn, Kenbridge, Rice, Honaker, Big Island, Wingina and in Norwood, Pennsylvania. Intensite III was reported from Maryland, Pennsylvania North Carolina, Michigan, Alabama, Georgia, Indiana, Illinois, Massachusetts, Maine, Connecticut, New York, and Washington D.C. and most of the rest of Virginia.

EMSC reported moderate shaking in Virginia at Dillwyn, Cumberland, Appomattox, Jetersville, Schuyler, Amelia, Crewe, Palmyra, Madison Heights, Maidens, Glen Allen, Richmond, along with a deep rumbling in the ground.

The last earthquake within about 150 km of this epicenter west of Richmond, Virginia

with M>=3.0 occurred on May 22, 2014 with M 3.1-3.2. At the time this summary noted:

 

 

"An earthquake of M 3.2 today in Virginia was widely felt in that and the surrounding

states of New Jersey, Pennsylvania, the District of Columbia, Maryland, West

Virginia and North Carolina according to data from NEIC. A listing of intensities

from NEIC is located in the "EASTERN U.S." section of this summary. The epicenter was

west of Richmond and there were no initial reports of damage or casualties

with this event. It is not believed by local geologists to be an aftershock

of the M 5.9 in Virginia which occurred three years ago but regional stresses

from that event probably helped to promote this earthquake. As with today's

event a major GRB was linked to the M 5.9 of August 23, 2011 and other unusual

earthquakes on that day. Today's earthquake of M 3.2 is the strongest in the

area within 100 km of this epicenter since the event of August 23, 2011 and

and aftershock of M 3.3 on September 1, 2011. That earthquake hit about 50

km north of today's event. An M 4.5 on December 9, 2003 hit within about 20

km of today's epicenter, the only other such event in the past 25 years.

This summary issued the following note on December 10, 2003 in regard to this

earlier earthquake. It should be noted that the strongest quake of Dec. 9, 2003

was an M 6.8 in Taiwan, not unlike the M 6.0 that occurred there yesterday.

 

"A widely felt moderate earthquake occurred on Dec. 9 in the region of Virginia,

U.S with M 4.5. The event was felt from Philadelphia and New York on the north

to South Carolina on the south. Maximum shaking intensity was M VII (strong shaking

with moderate damage possible). AP news reports indicate damage was only

slight and no injuries were reported despite the wide felt area of this event.

The last earthquake of M>4.5 in the region (33-42N 60-95W - eastern U.S.) occurred

in northern Alabama on April 29, 2003. An M 5.0 was registered in the Kentucky/Indiana

border region on June 18, 2002. Earthquakes in Virginia which reach intensity

VII are rare indeed. The last such appears to have been an event near Luray,

VA on April 9, 1918 which was felt over 60,000 sq. mi. and on Dec. 22, 1875 an earthquake

near Arvonia, VA was felt over an area of 50,000 sq. mi. and reach intensity

VII." (December 10, 2003, May 22, 2014)

 

This event is at at 120 degrees (node 3) from the M 7.7 in Myanmar of

March 28 and may have been promoted by energy from that source.

It occurred within minutes of local solar noon in concert with a C-class

solar flare (#1240 C4.5, strongest flare of the past three days) and was probably promoted by SFE from that flare as reported

by SWPC:

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

1240       1702   1707      1711   C4.5      (May 6, 2025)   1.8E-03  

Virginia M 3.1 17:08 UT

 

 

Forecast 172032 had expected this event within about 100 km was likely around

May 10, 2025.

 

O: 06MAY2025 17:08:17 37.4N  78.5W ML=3.0  ANSS   Virginia              

P: 10MAY2025 172032   37.0N  77.0W 2.0-4.3 BAAAA  Kentucky/Tennessee/NC

 

MOROCCO

 

An M 4.2 also occurred today in Morocco SSW of Marrakesh. EMSC reported moderate

shaking was felt in Morocco at Ouirgane, Tameslohte, Ait Imour, Tahannaout, Oulad Berhil, Menara, Tassoultante, Sid Zouine, Marrakesh, Menara, Chichaoua, Saada, Mechouar-Kasba, Gueliz, Seedi Yousuf Bin Ali and as far as Settat, Boukoura and Zaouiat Cheikh more than 250 km from the

This earthquake is located at 101-102 degrees from the M 7.4 in the Drake Passage

and at the fourth node (90.0 degrees) from Myanmar and was probably

promoted by energy from those sources. The last earthquake in Morocco within

about 250 km of today's epicenter with M>=4.2 occurred as an M 6.8 hit

ths epicenter on September 8, 2023 causing much damage. This is probably

an aftershock of that event. At the time this summary noted:

 

  

 

"A rare earthquake of M 6.9 struck the area of Marrakech, Morocco today.

World press outlets reported at least 2000 were killed in this earthquake -

The strongeset in Morocco in more than a century. At least 1832 people were reported by Morocco's Interior Ministry to have

been injured in the quake among which were 1220 with critical injuries. Damage was

considerable with many structures destroyed. Most of the deaths and destruction occurred

in the province of Al Haouz near the epicenter but deaths were also recorded in

Taroudant, Chichaaoua, Marrackesh, Agadir, Casablanca among others. Damage included extensive damage to the 12th sentruy Koutobia Mosque in Marakesh.   It occurred near local solar noon and was followed by an M 4.9 19 minutes

later.  NEIC reported maximum intensity VII in Morocco at Marrakesh, El Kealaa and Taroudannt with VI in Oulad Teima, Quarzazate,, V in Youssoufia, Ben Guerir, Agadir, Essaouria, Ben Guerir, Agadir, Essauira, Safi, Sidi, Tisnit, Fquiah, Settat, Beni, Zagora, Berrechid, Oued Zem with IV in El Jadida, Khouribga, Azemmour, Kasba among other communities. It was also reported felt with light intensity II-III in Algeria, Spain, Portugal, 

Earthquakes in Morocco or Spain at this magnitude level are rare. The historical

record shows no events of M>=6.8 within about 500 km of today's epicenter. The last

significant earthquake in the area was an M 5.6 to the east of today's epicenter

on October 23 and again on October 30, 1992.  An M 6.0 hit near today's

epicenter in Morocco on February 29, 1960 - the only event in the historical

record which goes back 150 year of M>=6 in Morocco. 

NEIC reported the M 4.9 aftershocks was felt with maximum intensity VI in Morocco at Guelmim, Tiznit, Taroudannt, Quarzazate, V in Marracech, Agadir, Essaouira, Ben Guerir, and Khouriba among other communities.

 

The earthquake in Morocco followed an M 6.6 in the Kermadec Islands. These two

epicenters are nearly antipodal and the quake in Morocco may have been triggered

by antipodal stresses associated with the M 6.4 in the Kermadec Islands." (September 9, 2023)

 

Today's event also saw a series of moderate sized earthquakes in the Kermadec

Islands near its antipode.

 

Today's earthquake in Morocco occurred at the height of the current geomagnetic

storm within minutes of local solar noon and may have been promoted by energy

from those storms.

 

This earthquake in Morocco was at 101-102 degrees from the M 7.4 in the

Drake Passage of May 2, 2025 and may have been promoted by energy from that

source. Other events at this distance from the Drake Passage today occurred

in the area of California and the South Indian Ocean and in the Solomon Islands.

 

Forecast 172035 had expected enhanced seismicity Morocco around May 5, 2025.

 

O: 06MAY2025 11:21:15 31.1N   8.4W ML=4.2  EMSC   Morocco               

P: 05MAY2025 172035   37.0N   3.0W 3.5-5.1 ADCAA  Morocco/Spain         

 

The current distribution of earthquakes from the Drake Passage had been forecast

on May 2 in this summary as:

 

Significant earthquakes since that forecast are starred *.

 

Preliminary expectations for far field triggering from Macquarie Island (M 6.8 April 29, 2024)

 

Antipodal (~180 degrees)

 

Drake Passage to Mongolia, Siberia   

 

Outer shadow zone edge (141-148 degrees)

 

Drake Passage to Afghanistan*, northern India*, Taiwan*, Rat Is*, No. Philippines*,

 

Node 3 (120 degrees)

 

Drake Passage to Mindanao*, Sumatra, Central Indonesia*, Greece, western Turkey*, Italy, Reykjanes Ridge*, SE Alaska

 

P- and S- shadow zone edge and node 7 (101-110 degrees)

 

Drake Passage to Central, northern California*, Utah*, Northern Mid-Atlantic Ridge*, Gibraltar*, Spain, New Guinea*, Hawaii*,         

 

Node 4 (90 degrees)

 

Drake Passage to Baja*, Gulf of California*, Northern Mid-Atlantic*, Kenya*, Western Australia, Vanuatu*, Loyalty Is*. Central Tonga

 

Node 5 (72 degrees)

 

Drake Passage to Chiapas, Mexico*, Puerto Rico*, South Africa*, northern New Zealand*, Tonga/Fiji*

 

Node 6 (60 degrees)

 

Drake Passage to Southern New Zealand, Venezuela, Panama, Ecuador*, Colombia, Central mid-Atlantic*, Macquarie

 

Node 7 (52 degrees)

 

Drake Passage to Central*, Northern Peru*, Southern mid-Atlantic

 

 

 

The strongest earthquake in the U.S. or Canada today was an M 3.8 in the Kenai region of southern Alaska. NEIC reported it was felt with intensity III in southern Alaska in Anchorage, Fort Richardson, Indian, Chugiak, Clam Gulch, Girdwood, Seward, Sterling and II in Cooper Landing, Eagle River, Kenai, Moose Pass, Wasilla, Soldotna, Nikolai.

 

NEIC reported an earthquake of M 4.4 in Myanmar was felt with  intensity up to II-III in the area(s) of Myanmar at Mandalay, Patheingyi, Chanmyathazi, Mahaaungmye, Aungmyaythazan.

 

No Tropical Cyclones are currently active.

 

SOLAR FLARES

 

Flare #    START  MAX       END    CLASS     DATE    Flux (Jm-2)

-------------------------------------------------------------------------

 

1160       0559   0611      0622   C1.7      (May 6, 2025)   2.0E-03  

1200       1045   1051      1056   C1.8      (May 6, 2025)   1.2E-03  

1210       1146   1152      1158   C1.7      (May 6, 2025)   1.1E-03  

1310       1606   1614      1618   C1.1      (May 6, 2025)   1.0E-03  

1230       1618   1622      1624   C2.3      (May 6, 2025)   8.8E-04  

Tarapaca, Chile M 4.4 16:25 UT

 

1240       1702   1707      1711   C4.5      (May 6, 2025)   1.8E-03  

Virginia M 3.1 17:08 UT

 

1260       1742   1750      1755   C1.6      (May 6, 2025)   5.1E-04  

Vanuatu M 5.5 17:45 UT

 

1280       1809   1814      1818   C1.6      (May 6, 2025)   9.4E-04  

Central East Pacific Rise M 5.8 18:15 UT

 

1300       1915   1922      1925   C1.4      (May 6, 2025)   5.3E-04  

Argentina M 4.4 19:21 UT

 

1320       1925   1931      1934   C1.8      (May 6, 2025)   1.0E-03  

1340       2021   2025      2028   C1.4      (May 6, 2025)   1.0E-03  

1380       2028   2032      2034   C2.1      (May 6, 2025)   9.2E-04  

New Guinea M 4.1 20:34 UT

Ecuador M 3.9 20:33 UT

 

1350       2318   2329      2333   C1.3      (May 6, 2025)   5.5E-04  

So. Alaska M 3.9 23:28 UT

 

1360       2347   2357      0001   C3.0      (May 6, 2025)   1.6E-03  

 

* indicates analog reading from graph provided by SWPC

 

GEOMAGNETIC FIELD:  active  May 7, unsettled May 8 minor storms May 9.  Solar M-flare chance: 45% X-class: 5% proton storm: 5%

The current geomagnetic storm continued today reaching a peak at high latitude

with kp 7 around 08:30 UT.

 

AP Indicies (global, high, mid-latitude, time of max AP, Max AP, Sunspot Number, Radio Flux)    15 20 15 08:00 5   90 156

 

 

A strong Gamma Ray Burst was recorded by SWIFT on May    4, 2025 at 23:25:57 UT (#250504A).  A preliminary UVOT Magnitude was not assigned to this GRB.

Earthquakes of M 3.7 in Valparaiso, Chile, M 4.3 in the Drake Passage and of M 4.4 in Myanmar occurred within about 5 minutes of this GRB.

 

 

A strong Gamma Ray Burst was recorded by SWIFT on April 30, 2025 at 17:31:21 UT (#250430A).  A preliminary UVOT Magnitude of V>18.9 was assigned to this GRB.

 

A strong Gamma Ray Burst was recorded by SWIFT on April 24, 2025 at 06:52:28 UT (#250424A).  A preliminary UVOT Magnitude of V>18.7 was assigned to this GRB.

An earthquake of M 4.3 accompanied this GRB in the Fiji Islands at 06:51 UT

 

The current earthquakes map contains expected distances at which enhanced seismicity is

likely at this time due to the M 7.4 in the Drake Passage (Green stipples) of

May 2, 2025 and the North and South Geomagnetic poles due to the geomagnetic

storm today.

 

 

EARTHQUAKE LISTING

 

Listed are the EMSC locations for earthquakes of M>=2.0 (M)4.0 for the world)  during the past day in

reverse chronological order. Distances from  major recent earthquakes (in degrees)

are added at the end of the earthquake data line. These include in this

listings distances to the nearest degree between the event and the previous

mainshock as for New Zealand (ZDIS), Drake Passage (DDIS) Myanmar (MDIS); Tonga (TDIS); South Geomagnetic pole (SGDIS); North Geomagnetic Pole (NGDIS).

Earthquakes are considered nodal if they occur within about 2 degrees of

nodes (360/n*m) where n and m are small integers. For example in the current model an earthquake

would be considered possibly nodal at node 3 if it occurs at 117.5-122.5 degrees

from a mainshock.

 

 

 

MO DA HR MN YEAR  LAT   LONG  MAG GEOGRAPHIC LOCATION DISTANCES FROM LARGE EQ

 

                  N+S-  E+W-             Mainsdist Mainsdist Mainsdist

 

05  7 11 28 2025  -9.9  151.8 4.7 D'ENTRECASTEAUX ISLANDS REGION M63 SG55 T34 D105 MA44 Z39 NG95

05  7 11 01 2025  10.3  -86.3 4.3 OFF COAST OF COSTA RICA        M147 SG119 T91 D68 MA114 Z110 NG82

05  7 10 56 2025 -14.7   66.5 4.7 MID-INDIAN RIDGE               M46 SG67 T111 D99 MA77 Z84 NG103

05  7 10 50 2025  30.0  131.0 4.7 KYUSHU, JAPAN                  M32 SG93 T72 D150 MA86 Z83 NG55

05  7 10 46 2025  31.4 -115.5 3.3 BAJA CALIFORNIA, MEXICO        M118 SG126 T76 D96 MA114 Z106 NG60

05  7 10 45 2025  63.5 -151.1 3.7 CENTRAL ALASKA                 M80 SG138 T85 D135 MA124 Z116 NG25

05  7 10 00 2025  31.4 -115.6 3.1 BAJA CALIFORNIA, MEXICO        M118 SG126 T75 D96 MA114 Z106 NG59

05  7 09 56 2025  32.1 -101.1 2.2 WESTERN TEXAS                  M123 SG133 T86 D92 MA123 Z115 NG60

05  7 09 46 2025  30.8 -114.3 3.4 GULF OF CALIFORNIA             M120 SG126 T76 D95 MA114 Z106 NG60

05  7 09 36 2025  13.0  125.1 4.7 PHILIPPINE ISLANDS REGION      M29 SG76 T68 D135 MA71 Z70 NG72

05  7 09 35 2025  31.6 -104.4 2.0 WESTERN TEXAS                  M123 SG131 T84 D93 MA120 Z113 NG60

05  7 09 31 2025  12.8  125.2 4.2 SAMAR, PHILIPPINES             M29 SG76 T68 D134 MA71 Z70 NG73

05  7 08 36 2025  69.5 -144.4 3.4 NORTHERN ALASKA                M79 SG144 T91 D137 MA130 Z123 NG20

05  7 08 18 2025  15.5  -94.4 4.0 OFFSHORE OAXACA, MEXICO        M141 SG121 T85 D75 MA114 Z108 NG77

05  7 08 10 2025  40.3 -122.1 2.7 NORTHERN CALIFORNIA            M108 SG130 T77 D106 MA117 Z109 NG50

05  7 07 40 2025 -33.9 -179.9 4.8 SOUTH OF KERMADEC ISLANDS      M97 SG40 T14 D72 MA26 Z18 NG120

05  7 07 35 2025  18.6   96.6 4.0 MYANMAR                        M3 SG87 T95 D140 MA87 Z90 NG68

05  7 07 35 2025  -2.6   36.0 4.5 TANZANIA                       M63 SG91 T142 D95 MA104 Z112 NG93

05  7 07 22 2025  -3.8  140.2 4.0 PAPUA, INDONESIA               M50 SG59 T47 D115 MA51 Z49 NG89

05  7 07 09 2025   0.9   97.5 5.3 NIAS REGION, INDONESIA         M21 SG70 T88 D123 MA72 Z75 NG85

05  7 07 03 2025  41.0 -121.3 2.3 NORTHERN CALIFORNIA            M108 SG131 T78 D107 MA118 Z110 NG50

05  7 06 42 2025  14.1  -92.3 4.3 OFFSHORE GUATEMALA             M143 SG120 T87 D73 MA114 Z108 NG78

05  7 05 40 2025   0.3  125.4 4.7 MOLUCCA SEA                    M35 SG64 T62 D122 MA59 Z59 NG85

05  7 05 37 2025  17.6 -101.4 4.1 GUERRERO, MEXICO               M137 SG120 T80 D79 MA112 Z105 NG74

05  7 05 07 2025  31.7 -104.3 3.3 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05  7 04 41 2025  12.8  125.9 4.9 SAMAR, PHILIPPINES             M30 SG76 T67 D134 MA71 Z69 NG73

05  7 03 48 2025   7.9  127.0 4.8 MINDANAO, PHILIPPINES          M33 SG71 T64 D129 MA66 Z65 NG77

05  7 03 37 2025  15.5  -94.8 4.1 OFFSHORE OAXACA, MEXICO        M141 SG120 T85 D75 MA114 Z108 NG77

05  7 02 15 2025  30.1  131.2 4.6 KYUSHU, JAPAN                  M32 SG93 T72 D150 MA86 Z83 NG55

05  7 02 09 2025  38.8 -122.8 2.2 NORTHERN CALIFORNIA            M109 SG129 T75 D105 MA116 Z107 NG52

05  7 01 39 2025 -29.1   31.8 3.0 SOUTH AFRICA                   M79 SG69 T124 D71 MA83 Z92 NG120

05  7 01 30 2025  40.3 -124.7 2.7 OFFSHORE NORTHERN CALIFORNIA   M107 SG129 T75 D107 MA116 Z107 NG50

05  7 01 24 2025  18.3  -68.8 3.8 DOMINICAN REPUBLIC             M137 SG131 T109 D74 MA130 Z127 NG75

05  6 23 28 2025  60.8 -150.0 3.9 KENAI PENINSULA, ALASKA        M82 SG136 T83 D133 MA122 Z114 NG28

05  6 23 22 2025  31.6 -103.9 2.0 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05  6 22 33 2025  49.2  158.2 4.0 EAST OF KURIL ISLANDS          M55 SG114 T73 D151 MA103 Z97 NG36

05  6 22 28 2025  15.4  -94.9 4.0 OFFSHORE OAXACA, MEXICO        M141 SG120 T85 D75 MA114 Z108 NG77

05  6 22 06 2025  54.3 -158.8 3.2 SOUTH OF ALASKA                M80 SG128 T75 D132 MA114 Z106 NG34

05  6 21 04 2025  50.2  177.3 3.3 RAT ISLANDS, ALEUTIAN ISLANDS  M68 SG118 T70 D141 MA105 Z98 NG36

05  6 20 34 2025  -3.1  141.2 4.1 NEW GUINEA, PAPUA NEW GUINEA   M50 SG60 T46 D115 MA52 Z49 NG88

05  6 20 33 2025  -1.8  -77.9 3.9 ECUADOR                        M159 SG110 T95 D55 MA109 Z106 NG95

05  6 20 03 2025  49.4 -128.0 2.7 VANCOUVER ISLAND, CANADA REGIO M98 SG135 T80 D116 MA121 Z113 NG41

05  6 20 02 2025 -36.5  144.9 2.9 VICTORIA, AUSTRALIA            M74 SG27 T39 D82 MA19 Z18 NG122

05  6 19 21 2025 -22.5  -66.3 4.4 JUJUY, ARGENTINA               M163 SG92 T97 D34 MA95 Z95 NG116

05  6 19 06 2025 -25.5   27.7 3.1 SOUTH AFRICA                   M81 SG74 T129 D72 MA88 Z97 NG116

05  6 18 56 2025  21.7   96.4 4.4 MYANMAR                        M0 SG90 T97 D143 MA90 Z92 NG65

05  6 18 33 2025  38.9 -122.1 2.6 NORTHERN CALIFORNIA            M109 SG129 T76 D105 MA116 Z108 NG52

05  6 18 18 2025  56.0 -149.2 3.3 GULF OF ALASKA                 M84 SG132 T78 D129 MA118 Z110 NG33

05  6 18 15 2025  -3.9 -104.3 5.8 CENTRAL EAST PACIFIC RISE      M153 SG99 T69 D60 MA93 Z87 NG95

05  6 18 10 2025  31.6 -104.0 2.0 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05  6 17 45 2025 -20.0  169.4 5.5 VANUATU                        M83 SG49 T15 D89 MA35 Z28 NG106

05  6 17 29 2025 -34.7  -69.1 4.0 MENDOZA, ARGENTINA             M161 SG79 T90 D22 MA83 Z84 NG128

05  6 17 21 2025   4.4  128.5 4.0 NORTH OF HALMAHERA, INDONESIA  M36 SG68 T61 D126 MA62 Z61 NG81

05  6 17 08 2025  37.5  -78.5 3.1 VIRGINIA                       M120 SG146 T106 D94 MA140 Z133 NG56

05  6 16 25 2025 -21.0  -69.7 4.4 TARAPACA, CHILE                M166 SG93 T95 D35 MA95 Z95 NG114

05  6 14 24 2025  -1.8  136.4 4.1 BIAK REGION, INDONESIA         M46 SG61 T51 D118 MA54 Z52 NG87

05  6 14 20 2025  -1.8  136.4 4.6 BIAK REGION, INDONESIA         M46 SG61 T51 D118 MA54 Z52 NG87

05  6 13 51 2025  15.7  -93.9 4.0 OFFSHORE CHIAPAS, MEXICO       M141 SG121 T86 D75 MA114 Z108 NG77

05  6 12 50 2025  46.7 -121.1 2.1 WASHINGTON                     M103 SG136 T81 D112 MA122 Z114 NG44

05  6 12 41 2025  35.3 -117.8 2.1 SOUTHERN CALIFORNIA            M114 SG128 T76 D100 MA116 Z107 NG55

05  6 12 31 2025  13.2  -90.5 4.1 OFFSHORE GUATEMALA             M144 SG120 T88 D72 MA114 Z109 NG79

05  6 12 27 2025 -20.1 -175.5 4.4 TONGA                          M96 SG54 T1 D82 MA40 Z32 NG106

05  6 11 56 2025  35.7 -117.6 2.2 SOUTHERN CALIFORNIA            M114 SG128 T77 D101 MA116 Z108 NG55

05  6 11 21 2025  31.1   -8.4 4.2 MOROCCO                        M90 SG140 T163 D101 MA154 Z162 NG62

05  6 11 03 2025 -24.0  -66.7 4.4 JUJUY, ARGENTINA               M163 SG90 T96 D32 MA94 Z94 NG117

05  6 11 01 2025  31.3 -115.4 3.4 BAJA CALIFORNIA, MEXICO        M119 SG126 T76 D96 MA114 Z106 NG60

05  6 10 24 2025  36.1  -89.8 2.3 SOUTHEASTERN MISSOURI          M121 SG141 T97 D94 MA132 Z125 NG56

05  6 09 43 2025 -21.1 -173.8 5.0 TONGA                          M97 SG54 T0 D80 MA40 Z31 NG107

05  6 09 22 2025  38.7  141.9 4.5 NEAR EAST COAST OF HONSHU, JAP M42 SG102 T71 D153 MA93 Z88 NG47

05  6 08 53 2025 -57.0  -67.3 3.3 DRAKE PASSAGE                  M142 SG58 T81 D0 MA63 Z66 NG150

05  6 08 46 2025  31.8 -104.1 2.1 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05  6 08 43 2025  31.7 -115.9 3.0 BAJA CALIFORNIA, MEXICO        M118 SG126 T75 D96 MA114 Z106 NG59

05  6 08 28 2025 -24.2  -67.3 4.2 SALTA, ARGENTINA               M164 SG90 T95 D32 MA93 Z94 NG117

05  6 08 15 2025  31.7 -104.4 2.1 WESTERN TEXAS                  M123 SG131 T84 D93 MA121 Z113 NG60

05  6 08 08 2025  39.3   73.4 5.0 TAJIKISTAN                     M25 SG113 T119 D149 MA116 Z118 NG49

05  6 07 49 2025 -17.8 -175.4 4.6 TONGA                          M95 SG56 T2 D84 MA42 Z34 NG104

05  6 07 49 2025   4.5  128.0 4.1 NORTH OF HALMAHERA, INDONESIA  M35 SG68 T62 D126 MA62 Z61 NG81

05  6 07 15 2025  -5.5  103.9 4.3 SOUTHERN SUMATRA, INDONESIA    M28 SG62 T80 D117 MA63 Z66 NG91

05  6 07 13 2025  -3.8  139.3 4.6 PAPUA, INDONESIA               M49 SG59 T48 D115 MA51 Z49 NG89