Previous two summaries

GREAT QUAKES DAMAGING, DEADLY IN CENTRAL AND EASTERN TURKEY

EARTHQUAKE SUMMARY FOR FEBRUARY 5, 2023

Two major to great earthquakes occurred today in Central and eastern Turkey. The first of these was an M 7.8 but an M 7.5 occurred within minutes of local solar noon later in the day and was probably triggered by high tidal stresses which maximize near this hour. Press reports indicate it was felt from Eastern Turkey to the Mediterranean Sea and Cairo, Egypt. At least 1500 are confirmed dead and many more have probably perished in this earthquake of M 7.7-7.9. Many buildings were destroyed or damaged. This is an area where large number of refugees are stationed. These people have fled regional conflicts in Syria, Iran and Ukraine in recent years. Many of these camps were damaged in these earthquakes. At this writing official tolls include 1014 dead, 5383 injured, 29818 building collapsed in Turkey and 326 killed, 1042 injured in Syria. Widespread damage occurred for several hundred km running Southwest to Northeast. The mainshock epicenter was near Gaziantep where a thousand's year historic castlw was also damage. NEIC reported intensity IV in Hasanbeyli, Osmaniey and Islahiye, Gaziantep with VIII also in Nizip and VII in Ikenderun, Turkey and Aleppo, Syria. The mainshock was felt with intensity IV-VI as far as Cairo, Egypt, Kuwait, Tebriz, Iran, Izmir, Turkey, Iraq, Israel, Palestine, Georgia, Jordan, Cyprus, Lebanon. Many moderate aftershocks followed and were felt with moderate to light intensity in the epicentral area. An M 7.5 occurred later northeast of Kahramanmaras, Turkey. Pictures on the internet show massive destruction throughout the area. Rescue teams from many countries are flooding the area. A tsunami warning was issued for areas of the Mediterranean and Black Sea but was later withdrawn. The strongest immediate aftershock was an M 6.7 which was felt with intensity VII in Turkey at Urfa, and Syria at Latakia; VI wsa reported in Adana, Turkey and Tartus, Syria; V in Gaziantep, Erdemli, Turkey and in Hims, Syria and in Lebanon among other areas. This may have been triggered by the onset of a strong geomagnetic storm. This storm began near 00:00 UT on February 6, 2023 and ended after the geomagnetic field at satellite altitudes had dropped from about 100 Nanoteslas (nT) to about 40 NT when it ended abruptly at 01:16 UT (GOES 16 Hp via NOAA). The earthquake in Turkey occurred at 01:17 UT and was likely triggered by this major change in the intensity of the geomagnetic field.

The mainshock also occurred within several hours of the complete full moon as described in this an previous issues of this summary as:

"The full moon will arrive at 18:29 UT on February 5, 2023. Longitudes which are at local solar noon are near 100 West while those at local solar midnight are near 80 East. In the west these include areas of the central U.S. including Texas and Oklahoma/Kansas and Canada and western Mexico and part of the East Pacific Rise while in the east the areas of Afghanistan, Hindu Kush, Pakistan, China, central Asia and areas of the Indian Ridge system are included. These are the most likely regions to be subject to tidal triggering from February 2-8. While a major earthquake is unlikely at this time, regions of western Mexico and/or Central Asia could see a strong quake with this full moon.

It is likely that tidal stresses were a major factor in this earthquake occurring at this hour and date.

The area was also under high tidal stresses with the previous new moon and was near the longitude of maximum tidal stress with that alignment. Residual stresses from that new moon may have also contributed to today's M 7.8 in Turkey. This summary had noted this possibility in late January as:

"The new moon will arrive on January 21, 2023 at 20:53 UT. Longitudes which are at sub-solar conditions (local solar noon) at this time are near 135 West while those at local solar midnight are near 45 East longitude. In the west these include most of the coastline of North America from Alaska to California and portions of the East Pacific Rise while in the east the areas of Iran, Eastern Turkey, eastern Africa, and central Asia are included. These are the regions most likely to see substantial tidal triggering in the next week. Other areas may also see triggering with this new moon tidal alignment especially areas where SFE is also active. Tidally triggered events are most likely to occur new local solar midnight or noon. This is a super-moon that is the closest to the earth of any approach since the year 1030 with the next such approach 353 years from now. Tides are related to the third power of the distance, so even a small reduction in distance and have a considerable effect on tidal stress and subsequent tidally related seismicity. Likelihood of a strong to major tidally promoted earthquake in the next week are considered moderate to high." (January 18-22, 2023)

The last earthquake within Turkey or within about 500 km of today's epicenter in Central Turkey with M>=7 was an M 7.3 11.3 years ago (11.3X1) about 500 km northeast of today's epicenter on October 23, 2011 - an event which occurred two days before the new moon - and an M 7.8 in the Izmit, Turkey area on August 17, 1999 (near the new moon). This occurred 33.5 years ago (11.2X3). Astute readers will note that these are both at times (11.3 and 33.5 years from today) when the solar cycle is maximized (solar cycle period if about 11.2 years). That event is one of the most deadly in recent European history and did massive damage with extensive loss of life near Istanbul. It occurred two days after a solar eclipse was seen in that area and was certainly promoted by tidal effects from that eclipse. This summary noted that event on August 17, 2022 as:

"At least 17,000 were killed and 50,000 injured from this earthquake which left more than 500,000 homeless and thousands missing. Estimated cost was $7 billion (U.S. Dollars). Severe damage from Istanbul, Kocaeli and Sakryna Provinces of Turkey. Damage occurred to homes, public buildings and mosques. Liquefaction was common and large sections of several cities were inundated and subsided. Part of the motorway between Istanbul and Ankara buckled causing cars to crash into each other. Up to 5 meters of displacement occurred along the North Anatolian Fault. A tsunami was generated which caused additional damage in many areas around the Marmara Sea." (August 17, 2022)

"The only earthquakes in this area of M>=7.8 in the past century occurred located north of Lake Van. This appears to be the second largest earthquake in eastern Turkey since an M 8.0 in Erzincan in 1939. An M 7.5 occurred on November 24 1976 which damaged 9232 buildings and killed 3840 while a slightly smaller event of M 7.0 on August 19, 1966 killed 2529 and left more than 100,000 homeless in the Erzurum and Mus areas. Varto was almost destroyed in that earthquake." (October 24, 2011)

Note that the event of August 19, 1966 is also at a solar cycle from today occurring 56.5 (11.3X5) years ago and within a day of the new moon.

Other than these, the area has a long history of recorded damaging earthquakes.

Other such recent earthquakes in or near Turkey occurred in the Caucasus on August 22, 1978 in eastern Turkey about 500 km northeast of today's epicenter; and on September 6, 1975 both with M 7.8-8.0. Note that the event in 1978 is also at a solar cycle ago - 44.6 years ago (11.3X4). An M 7.8 also hit Turkey on January 24, 1916 but no such event have been recorded within 250 km of today's epicenter in at least 150 years.

The closest recorded great earthquake to today's epicenter was an M 7.9-8.0 on December 26, 1939. This summary noted this event on December 26, 2022 as:

"Between 20,000 and 30,000 were killed and more than 30,000 homes were destroyed. The large population of homeless severely suffered from winter snow and storms and cold. Most structures were destroyed at Erzincan, Susechri, Resadiye and Niksar. Faulting was observed east of Erzincan and Niksar. The sea was observed to retire 50 meters at Fatsa on the Black Sea and then to return 20 meters above the water line." (December 26, 2022)

This earthquake (in 1939) also occurred, like today's within hours of the full moon.

Today's earthquake is sufficiently large to considerably affect global seismicity patterns. The pattern this summary is most concerned with is far-field triggering at nodal distance from the mainshock. Strong earthquakes are nodal distances from this event are likely within the next 10-12 days with strong aftershocks with the new moon on February 20, 2023. Some of the areas to watch for enhanced far-field seismicity at this time and their distances from Turkey include:

144 Degrees - Tonga/Fiji/New Zealand, East Pacific Rise

120 Degrees - Coquimbo Chile, New Britain, Coast of Peru, Hawaii,

100-105 degrees - Panama, Costa Rica, Texas, Central and Southern California and Nevada, Colombia, Southwest Australia, New Guinea, Guam,

90 degrees - Aleutian Islands, Montana-British Columbia border, Southeastern US, Southeastern Alaska, Puerto Rico/Dominican Republic, Molucca Sea, Bonin Islands,

72 degrees - Taiwan, Sumatra, Quebec,

60 degrees - Andaman Islands, India

52 degrees - Myanmar, Greenland, South Africa, Canary, Cape Verde Islands, Mid-Atlantic,

Moderate foreshocks hit within about 150 km of today's epicenters on

Strong regional aftershocks with more damage are also expected near the region of central and northern and eastern Turkey in the next week. Residents should avoid damaged buildings during this period.

In the previous issue of this summary enhanced global seismicity was expected at this time as a result of returning solar flare activity and the full moon tides as:

"Moderately strong earthquakes of M 5.8-5.9 were felt in the Izu Islands, Japan in Coquimbo, Chile (M 5.5) and in eastern New Guinea, PNG today (M 5.9). This probably is the beginning of a more active period in global seismicity over the full moon today and with increased solar activity over the next several days. Watch for a strong earthquake in this period as noted in the tidal forecast (see above and under TIDAL section of this summary).

The last earthquake with M>=7.8 in the world occurred on August 12, 2021 in the

South Sandwich Islands with M 8.1 and as an M 8.2 two weeks earlier on July 29, 2021 in the Alaska Peninsula. Major earthquake often tend to clump together in limited time periods, perhaps triggering each other. It is possible that today's event in Turkey is the first of such a series after a long lull period in global seismicity.

Following are the parameters for the major earthquakes in Turkey today. A more extensive listing can be found in the EUROPEEAN Seismicity section of this summary. Forecast 150467 had expected today's activity in Turkey was likely within about 100 km around February 7, 2023. Today's activity is located near 144 degrees from the major earthquakes in Tonga and Fiji of November and December, 2022 and at the third node (120 degrees) from the M 7.0 in the Solomon Islands of November 22, 2022 and 101-102 degrees from the M 6.4 in Northern California of December 20, 2022 and may have been promoted by energy from those sources.

O: 6FEB2023 01:17:35 37.2N 37.0E mw=7.8 EMSC E of Nurda Turkey

O: 6FEB2023 10:24:49 38.1N 37.2E mw=7.5 EMSC Central Turkey

P: 7FEB2023 150467 38.0N 36.0E 3.5-5.0 AAAAA Turkey

As this issue of the summary was going to press another aftershock of M 6.0 occurred in the area (at 12:02 UT). It was followed by an M 5.5 in western Turkey in the Izmit area at 12:03 UT. More on these in the next issue of this summary. The timing of these, however is important as it illustrates another possible source of triggering for these and additional regional seismicity. This was a C7.8 solar flare, the strongest such event since January 26. This flare peaked within minutes of these two earthquakes (around 12:02). SWPC gives the following data for this flare:

SOLAR FLARE ACTIVITY

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

#------------------------------------------------------------------------------

XXXX 1158 1205 1225 C7.8 (February 6, 2023) 7.6E-03

An unusually large M 4.5 occurred on February 5 in Western Australia. NEIC reported it was felt in this region with intensity II-III in Perth and Albany. This is the strongest earthquake in western Australia within about 250 km of this epicenter since an M 4.7 about 200 km southeast of this on January 5, 2023 and an M 4.8 about 100 km southwest on January 24, 2022. The last such event in this area north of today's epicenter occurred in 2009. Forecast 150587 had expected this event within about 200 km was likely around February 6, 2023. When the event occurred in January, 2023 this summary noted:

"The most unusual earthquake in the world today was an M 4.7 in Western Australia. EMSC reported it was lightly felt in the epicentral area. This event is the strongest within about 200 km of this epicenter since an M 4.8 on January 24, 2022 and prior to that an M 4.8 on October 9, 2007." (January 5, 2023)

This activity is at 103 degrees from the earthquakes in Turkey today. It is possible this node was active triggering both of these events.

O: 05FEB2023 05:04:27 33.3S 117.0E ML=2.7 EMSC WESTERN AUSTRALIA

O: 05FEB2023 01:13:58 33.4S 117.0E ML=2.5 EMSC WESTERN AUSTRALIA

O: 5FEB2023 00:40:01 32.8S 117.5E mb=4.5 EMSC WESTERN AUSTRALIA

O: 5FEB2023 18:25:22 33.4S 117.0E ML=2.8 EMSC WESTERN AUSTRALIA

P: 6FEB2023 150587 31.0S 118.0E 2.0-4.4 ABAAA So. Australia

Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.8 in the area of the Central Turkey, February 6, 2023, where promoted seismicity is considered likely.

Today's projected seismicity map (updated for the effects of the Turkey quake and the full moon) follows for the coming week.

OTHER GLOBAL EARTHQUAKE ACTIVITY

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.

ASIA

O: 6FEB2023 07:29:26 31.3N 79.8E ML=3.5 EMSC WESTERN XIZANG-INDIA BORDER RE

P: 7FEB2023 150474 30.0N 82.0E 3.8-5.2 ABBAA Xizang

No significant (M>=5) or unusual earthquakes were reported in Asia today.

INDONESIA AND PHILIPPINES

O: 6FEB2023 07:42:25 0.4S 123.0E ML=4.8 EMSC SULAWESI, INDONESIA

P: 5FEB2023 150332 0.0N 122.0E 4.0-5.4 AAAAA Celebes Sea

P: 5FEB2023 150367 1.0S 124.0E 4.0-5.4 AAAAA Sulawesi area

O: 5FEB2023 23:19:34 2.5S 140.7E ML=4.6 EMSC NEAR N COAST OF PAPUA, INDONES

P: 4FEB2023 150362 3.0S 141.0E 4.0-5.4 AAAAA Papua New Guinea

O: 05FEB2023 22:29:33 2.8N 127.1E ML=4.0 EMSC MOLUCCA SEA

O: 5FEB2023 13:40:57 2.8N 128.2E ML=4.0 EMSC HALMAHERA, INDONESIA

P: 3FEB2023 150340 3.0N 129.0E 4.0-5.4 AAAAA Halmahera

O: 5FEB2023 10:51:08 6.8S 129.7E mb=4.4 EMSC BANDA SEA

P: 6FEB2023 150371 6.0S 130.0E 4.0-5.4 AAAAA West Irian, PNG

O: 6FEB2023 07:11:34 7.6S 117.1E mb=4.9 EMSC BALI SEA

P: 4FEB2023 150368 8.0S 117.0E 4.0-5.4 AAAAA Sumbawa Island area

O: 05FEB2023 16:10:08 6.4N 126.1E ML=4.5 EMSC MINDANAO, PHILIPPINES

O: 5FEB2023 09:59:20 7.8N 126.2E mb=4.7 EMSC MINDANAO, PHILIPPINES

P: 3FEB2023 150335 7.0N 126.0E 4.0-5.5 AAAAA Central Philippines

NEIC reported this earthquake of M 4.7 in Mindanao, Philippines was felt with intensity II-III in the area(s) of Mindanao, Philippines in Gabi, Nabunturan, Mawab and Davao.

O: 5FEB2023 17:52:17 12.2N 123.9E ML=4.0 EMSC MASBATE REGION, PHILIPPINES

P: 1FEB2023 150384 13.0N 122.0E 3.5-5.1 BABAA Luzon, Philippines

O: 5FEB2023 21:40:40 18.5N 145.3E mb=4.3 EMSC PAGAN REG., N. MARIANA ISLANDS

P: 8FEB2023 150390 18.0N 145.0E 4.0-5.6 BAAAA No. Marianas

CENTRAL AND SOUTH AMERICA

O: 6FEB2023 02:04:30 9.0N 84.1W ML=4.6 EMSC OFF COAST OF COSTA RICA

P: 5FEB2023 150337 8.0N 83.0W 3.5-5.0 AAAAA Costa Rica

O: 6FEB2023 05:48:46 10.5S 75.7W ML=4.0 EMSC CENTRAL PERU

P: 9FEB2023 150557 15.0S 76.0W 4.0-5.6 BCAAA Central Peru

O: 5FEB2023 09:22:11 14.4N 93.8W ML=4.0 EMSC OFF COAST OF CHIAPAS, MEXICO

P: 9FEB2023 150373 14.0N 93.0W 3.5-5.2 BAAAA Chiapas, Mexico

O: 5FEB2023 09:06:30 16.8N 99.7W mb=4.5 EMSC GUERRERO, MEXICO

O: 5FEB2023 08:06:29 17.0N 100.1W ML=4.0 EMSC GUERRERO, MEXICO

P: 7FEB2023 150393 18.0N 100.0W 3.5-5.5 AAAAA Oaxaca, Mexico

NEIC reported this earthquake of M 4.5 in Guerrero, Mexico was felt with intensity II-III in the area(s) of Guerrero, Mexico in Acapulco and San Marcos.

O: 6FEB2023 03:07:18 17.7S 69.7W ML=4.0 EMSC TARAPACA, CHILE

P: 8FEB2023 150562 18.0S 70.0W 4.0-5.6 AAAAA So. Peru/Bolivia

O: 5FEB2023 20:27:44 18.9N 68.5W Md=3.6 EMSC DOMINICAN REPUBLIC REGION

P: 9FEB2023 150395 19.0N 69.0W 3.4-5.4 BAAAA Puerto Rico

O: 05FEB2023 23:01:55 19.3N 65.9W Md=3.2 EMSC PUERTO RICO REGION

O: 5FEB2023 15:56:55 19.2N 66.6W Md=3.2 EMSC PUERTO RICO REGION

P: 6FEB2023 150394 19.0N 67.0W 3.4-5.2 AAAAA Puerto Rico

O: 5FEB2023 22:25:33 19.6N 73.3W ML=3.2 EMSC HAITI REGION

P: 7FEB2023 150395 19.0N 74.0W 3.4-5.4 AAAAA Puerto Rico

O: 5FEB2023 10:31:32 24.3S 67.2W mb=4.7 EMSC SALTA, ARGENTINA

P: 6FEB2023 150569 24.0S 66.0W 4.0-5.9 AAAAA Argentina

O: 5FEB2023 07:08:46 32.7S 71.7W mb=4.0 EMSC OFFSHORE VALPARAISO, CHILE

P: 7FEB2023 150584 34.0S 71.0W 4.0-5.6 ABAAA Central Chile

NEIC reported this earthquake of M 4.0 in Valparaiso, Chile was felt with intensity II-III in the area(s) of Valparaiso, Chile in Calera.

AFRICA AND EUROPE

O: 6FEB2023 01:26:20 45.3N 26.8E ML=4.6 EMSC ROMANIA

P: 3FEB2023 150509 46.0N 27.0E 3.0-4.9 BAAAA Romania/NW Turkey

O: 6FEB2023 03:02:09 35.8N 36.5E ML=4.2 EMSC SYRIA

P: 3FEB2023 150415 36.0N 35.0E 3.0-4.9 BABAA Aegean Sea

O: 6FEB2023 01:19:15 36.3N 28.0E ML=4.7 EMSC DODECANESE IS.-TURKEY BORDER R

P: 7FEB2023 150416 36.0N 27.0E 3.0-4.8 AAAAA Aegean Sea

O: 6FEB2023 07:30:08 36.5N 33.8E ML=4.4 EMSC CENTRAL TURKEY

P: 3FEB2023 150415 36.0N 35.0E 3.0-4.9 BABAA Aegean Sea

O: 6FEB2023 02:31:17 36.7N 36.9E ML=4.8 EMSC TURKEY-SYRIA BORDER REGION

P: 3FEB2023 150415 36.0N 35.0E 3.0-4.9 BABAA Aegean Sea

P: 7FEB2023 150467 38.0N 36.0E 3.5-5.0 ABAAA Turkey

O: 6FEB2023 05:32:55 37.0N 39.8E mb=4.3 EMSC EASTERN TURKEY

P: 8FEB2023 150470 39.0N 41.0E 3.5-5.1 ABAAA Turkey

O: 5FEB2023 09:07:46 38.5N 44.8E ML=4.0 EMSC TURKEY-IRAN BORDER REGION

P: 5FEB2023 150469 38.0N 44.0E 3.5-5.1 AAAAA Turkey

O: 6FEB2023 01:47:42 38.6N 40.6E ML=4.3 EMSC EASTERN TURKEY

P: 4FEB2023 150470 39.0N 40.0E 3.5-4.9 AAAAA Turkey

O: 6FEB2023 01:59:17 38.8N 32.1E ML=5.0 EMSC CENTRAL TURKEY

P: 6FEB2023 150468 39.0N 31.0E 3.5-5.3 AAAAA Turkey

O: 6FEB2023 03:16:37 39.3N 38.3E ML=4.4 EMSC EASTERN TURKEY

P: 4FEB2023 150470 39.0N 40.0E 3.5-4.9 AABAA Turkey

O: 6FEB2023 04:24:32 40.2N 27.7E ML=4.0 EMSC WESTERN TURKEY

P: 6FEB2023 150509 41.0N 26.0E 3.0-4.9 AAAAA Romania/NW Turkey

O: 06FEB2023 02:48:23 36.1N 36.2E ML=4.2 EMSC TURKEY-SYRIA BORDER REGION

O: 06FEB2023 05:36:36 36.3N 36.2E mb=4.6 EMSC TURKEY-SYRIA BORDER REGION

O: 06FEB2023 03:58:18 36.5N 36.4E ML=4.3 EMSC TURKEY-SYRIA BORDER REGION

O: 06FEB2023 07:08:38 36.6N 36.5E ML=4.6 EMSC TURKEY-SYRIA BORDER REGION

O: 06FEB2023 02:43:46 36.7N 36.4E ML=4.2 EMSC TURKEY-SYRIA BORDER REGION

O: 06FEB2023 02:54:00 36.7N 36.4E mb=4.9 EMSC TURKEY-SYRIA BORDER REGION

O: 06FEB2023 01:36:28 37.0N 36.8E mb=5.6 EMSC CENTRAL TURKEY

O: 06FEB2023 01:58:24 37.0N 36.6E ML=5.2 EMSC CENTRAL TURKEY

O: 06FEB2023 01:23:15 37.1N 36.7E ML=4.7 EMSC CENTRAL TURKEY

O: 06FEB2023 01:26:49 37.1N 37.1E mb=5.6 EMSC CENTRAL TURKEY

O: 06FEB2023 03:25:10 37.1N 36.6E ML=4.0 EMSC CENTRAL TURKEY

O: 06FEB2023 01:17:32 37.2N 37.0E Mw=7.8 EMSC CENTRAL TURKEY

O: 06FEB2023 02:23:14 37.2N 37.0E mb=5.2 EMSC CENTRAL TURKEY

O: 06FEB2023 04:01:15 37.2N 36.8E ML=4.0 EMSC CENTRAL TURKEY

O: 06FEB2023 02:01:44 37.3N 37.0E ML=4.7 EMSC CENTRAL TURKEY

O: 06FEB2023 02:17:41 37.3N 36.5E mb=5.0 EMSC CENTRAL TURKEY

O: 06FEB2023 02:55:08 37.3N 37.1E ML=4.7 EMSC CENTRAL TURKEY

O: 06FEB2023 01:28:18 37.4N 36.9E Mw=6.7 EMSC CENTRAL TURKEY

O: 06FEB2023 03:41:27 37.4N 37.1E ML=4.1 EMSC CENTRAL TURKEY

O: 06FEB2023 06:26:33 37.4N 36.5E mb=5.0 EMSC CENTRAL TURKEY

O: 06FEB2023 01:51:44 37.5N 37.2E ML=5.1 EMSC CENTRAL TURKEY

O: 06FEB2023 02:21:19 37.5N 37.1E ML=4.6 EMSC CENTRAL TURKEY

O: 06FEB2023 03:12:11 37.5N 37.3E mb=4.5 EMSC CENTRAL TURKEY

O: 06FEB2023 04:03:21 37.5N 37.6E ML=4.1 EMSC CENTRAL TURKEY

O: 06FEB2023 04:16:49 37.5N 37.2E ML=4.6 EMSC CENTRAL TURKEY

O: 06FEB2023 04:24:45 37.5N 37.2E ML=4.1 EMSC CENTRAL TURKEY

O: 06FEB2023 06:59:04 37.5N 37.1E ML=4.2 EMSC CENTRAL TURKEY

O: 06FEB2023 07:21:06 37.5N 37.1E ML=4.0 EMSC CENTRAL TURKEY

O: 06FEB2023 02:34:19 37.6N 37.3E ML=4.4 EMSC CENTRAL TURKEY

O: 06FEB2023 06:43:20 37.6N 37.1E ML=4.2 EMSC CENTRAL TURKEY

O: 06FEB2023 03:54:00 37.7N 37.1E ML=4.1 EMSC CENTRAL TURKEY

O: 06FEB2023 03:55:38 37.7N 37.6E ML=4.1 EMSC CENTRAL TURKEY

O: 06FEB2023 06:54:57 37.8N 37.4E mb=4.8 EMSC CENTRAL TURKEY

O: 06FEB2023 02:03:37 37.9N 37.8E mb=5.5 EMSC CENTRAL TURKEY

O: 06FEB2023 02:06:23 37.9N 38.0E ML=4.8 EMSC CENTRAL TURKEY

O: 06FEB2023 05:22:44 37.9N 37.9E ML=4.2 EMSC CENTRAL TURKEY

O: 06FEB2023 04:04:25 38.0N 37.3E ML=4.5 EMSC CENTRAL TURKEY

O: 06FEB2023 04:14:20 38.0N 38.6E mb=4.4 EMSC EASTERN TURKEY

O: 06FEB2023 05:55:53 38.0N 38.4E mb=4.5 EMSC EASTERN TURKEY

O: 06FEB2023 02:26:32 38.1N 38.2E ML=4.3 EMSC EASTERN TURKEY

O: 06FEB2023 03:04:47 38.1N 38.6E mb=5.2 EMSC EASTERN TURKEY

O: 06FEB2023 03:28:45 38.2N 38.6E mb=4.4 EMSC EASTERN TURKEY

O: 06FEB2023 04:18:49 38.2N 38.5E mb=5.2 EMSC EASTERN TURKEY

O: 06FEB2023 03:45:49 38.3N 38.6E mb=4.8 EMSC EASTERN TURKEY

O: 06FEB2023 01:59:57 38.6N 39.4E ML=4.0 EMSC EASTERN TURKEY

O: 6FEB2023 01:17:35 37.2N 37.0E mw=7.8 EMSC E of Nurda Turkey

O: 6FEB2023 10:24:49 38.1N 37.2E mw=7.5 EMSC Central Turkey

P: 7FEB2023 150467 38.0N 36.0E 3.5-5.0 AAAAA Turkey

SOUTHWEST PACIFIC

No significant (M>=5) or unusual earthquakes were reported in the Southwest Pacific region today.

OCEAN RIDGES

No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.

ZEALANDIA AND AUSTRALIA REGION

O: 6FEB2023 02:06:39 30.9S 179.9E ML=4.7 EMSC KERMADEC ISLANDS REGION

O: 6FEB2023 02:22:27 31.0S 177.1W mb=5.1 EMSC KERMADEC ISLANDS, NEW ZEALAND

P: 7FEB2023 150574 29.0S 178.0W 4.0-5.5 ABAAA No. Kermadec Islands

O: 5FEB2023 18:25:22 33.4S 117.0E ML=2.8 EMSC WESTERN AUSTRALIA

P: 6FEB2023 150587 31.0S 118.0E 2.0-4.4 ACAAA So. Australia

O: 6FEB2023 01:36:16 37.5S 175.8E ML=3.7 EMSC NORTH ISLAND OF NEW ZEALAND

P: 6FEB2023 150586 37.0S 177.0E 3.0-4.6 AAAAA North Island, N.Z.

JAPAN AND KURIL ISLANDS

O: 5FEB2023 21:58:50 27.3N 143.5E mb=4.7 EMSC BONIN ISLANDS, JAPAN REGION

P: 6FEB2023 150402 29.0N 142.0E 4.0-5.7 ABAAA Bonin Islands

O: 6FEB2023 03:32:15 26.4N 126.0E mb=4.2 EMSC NORTHEAST OF TAIWAN

P: 8FEB2023 150409 27.0N 127.0E 4.0-5.6 AAAAA Ryukyu Islands

O: 5FEB2023 12:58:21 48.9N 157.5E mb=4.5 EMSC EAST OF KURIL ISLANDS

P: 8FEB2023 150525 50.0N 156.0E 4.0-6.1 BABAA Kamchatka

U.S./CANADA*

WESTERN U.S./CANADA

CALIFORNIA

O: 05FEB2023 21:45:31 31.4N 114.3W ML=3.4 EMSC GULF OF CALIFORNIA

O: 05FEB2023 20:36:38 31.5N 114.3W ML=3.7 EMSC GULF OF CALIFORNIA

O: 5FEB2023 07:16:44 30.9N 114.0W ML=3.7 EMSC GULF OF CALIFORNIA

O: 5FEB2023 21:25:52 31.4N 114.3W ML=3.6 EMSC GULF OF CALIFORNIA

P: 5FEB2023 150403 30.0N 114.0W 3.5-5.1 AAAAA Gulf of California

O: 5FEB2023 06:59:55 32.3N 115.4W Ml=2.0 EMSC BAJA CALIFORNIA, MEXICO

P: 7FEB2023 150454 32.5N 115.7W 2.5-4.5 AAAAA So. California

O: 5FEB2023 09:25:45 33.7N 116.7W Ml=2.2 EMSC SOUTHERN CALIFORNIA

P: 7FEB2023 150456 33.4N 116.7W 2.5-4.7 AAAAA So. California

O: 6FEB2023 03:44:33 35.5N 118.4W Ml=2.2 EMSC CENTRAL CALIFORNIA

P: 4FEB2023 150460 35.9N 117.7W 2.5-4.8 AAAAA So. California

O: 05FEB2023 22:33:59 35.7N 117.6W Ml=2.0 EMSC SOUTHERN CALIFORNIA

O: 5FEB2023 14:22:14 35.6N 117.3W ML=2.1 EMSC SOUTHERN CALIFORNIA

P: 3FEB2023 150458 35.1N 117.0W 2.5-4.6 AAAAA So. California

O: 5FEB2023 23:55:48 35.8N 121.3W Md=2.6 EMSC CENTRAL CALIFORNIA

P: 5FEB2023 150449 35.7N 121.2W 2.5-4.6 AAAAA Off So. California

O: 5FEB2023 11:04:22 37.6N 119.4W Md=2.2 EMSC CENTRAL CALIFORNIA

P: 1FEB2023 150419 37.3N 119.4W 2.5-4.4 BAAAA California/Nevada area

O: 5FEB2023 06:58:34 38.3N 119.3W ML=2.1 EMSC CENTRAL CALIFORNIA

O: 5FEB2023 07:43:47 38.6N 119.5W Md=2.1 EMSC CENTRAL CALIFORNIA

P: 5FEB2023 150422 38.8N 119.6W 2.5-4.6 AAAAA California/Nevada area

O: 5FEB2023 22:39:24 38.8N 122.9W Md=2.2 EMSC NORTHERN CALIFORNIA

P: 4FEB2023 150428 38.8N 122.8W 2.5-4.6 AAAAA Central California

O: 6FEB2023 02:59:46 40.5N 124.0W Md=2.5 EMSC NORTHERN CALIFORNIA

P: 6FEB2023 150502 40.6N 124.9W 2.5-4.8 AAAAA Off Coast of No. Calif

NEIC reported this earthquake of M 2.5 in Northern California was felt with intensity II-III in the area(s) of Northern California in Fortuna and McKinleyville.

ALASKA

O: 6FEB2023 01:04:47 53.0N 167.4W ml=3.6 EMSC FOX ISLANDS, ALEUTIAN ISLANDS

P: 5FEB2023 150524 52.5N 166.5W 3.5-5.5 AAAAA Fox Islands, Aleutians

O: 5FEB2023 22:43:11 53.2N 164.5W ML=3.2 EMSC UNIMAK ISLAND REGION, ALASKA

P: 3FEB2023 150536 54.1N 164.4W 3.5-5.3 AAAAA Unimak Islands, Aleutians

O: 5FEB2023 07:55:47 54.7N 156.7W ML=3.6 EMSC SOUTH OF ALASKA

P: 9FEB2023 150516 54.7N 156.9W 3.5-5.3 BAAAA Alaska Peninsula

O: 05FEB2023 20:35:47 60.2N 153.2W ML=3.3 EMSC SOUTHERN ALASKA

O: 5FEB2023 18:31:33 59.7N 153.1W ML=3.3 EMSC SOUTHERN ALASKA

P: 5FEB2023 150540 60.2N 153.2W 3.2-4.9 AAAAA Central Alaska

O: 6FEB2023 02:15:37 63.1N 149.9W ml=3.1 EMSC CENTRAL ALASKA

P: 7FEB2023 150543 62.6N 151.4W 3.2-5.3 AAAAA Central Alaska

NEIC reported this earthquake of M 3.1 in Central Alaska was felt with intensity II-III in the area(s) of Central Alaska in Matanuska-Sustina Borough and in Anchorage.

PACIFIC NORTHWESTERN U.S./WESTERN CANADA

O: 5FEB2023 19:52:40 48.5N 123.3W Ml=2.3 EMSC VANCOUVER ISLAND, CANADA REGIO

P: 7FEB2023 150514 47.5N 121.8W 2.0-4.0 AAAAA Washington state, U.S.

ROCKY MOUNTAINS REGION

O: 5FEB2023 20:18:05 32.1N 102.1W mb=2.4 EMSC WESTERN TEXAS

P: 3FEB2023 150451 31.7N 103.0W 2.0-4.0 AAAAA SW U.S.A

O: 05FEB2023 07:01:49 44.4N 115.2W ML=2.5 EMSC SOUTHERN IDAHO

O: 5FEB2023 14:46:39 44.4N 114.6W ML=2.7 EMSC SOUTHERN IDAHO

P: 4FEB2023 150492 44.5N 115.2W 2.0-4.0 AAAAA Montana/Idaho

EASTERN U.S./CANADA

No earthquakes of M>=1 were located in the Eastern U.S. or Canada today.

HAWAII

O: 6FEB2023 02:30:53 19.3N 155.4W ML=3.6 EMSC ISLAND OF HAWAII, HAWAII

P: 4FEB2023 150380 19.3N 155.2W 3.0-4.8 AAAAA Hawaii

NEIC reported this earthquake of M 3.0 in Hawaii was felt with intensity II-III in the area(s) of Hawaii in Naalehu, Pahoa and Pepeekeo.

O: 5FEB2023 14:36:25 19.0N 155.4W ML=3.4 EMSC ISLAND OF HAWAII, HAWAII

P: 9FEB2023 150380 18.8N 155.2W 3.0-4.5 BAAAA Hawaii

MODERATE QUAKES IN SOUTHWEST PACIFIC AREA

MODERATELY LARGE QUAKES NEW GUINEA; CENTRAL CHILE; IZU ISLANDS, JAPAN

EARTHQUAKE SUMMARY FOR FEBRUARY 4, 2023

Moderately strong earthquakes of M 5.8-5.9 were felt in the Izu Islands, Japan in Coquimbo, Chile (M 5.5) and in eastern New Guinea, PNG today (M 5.9). This is probably is the beginning of a more active period in global seismicity over the full moon today and with increased solar activity over the next several days. Watch for a strong earthquake in this period as noted in the tidal forecast for this full moon:

The strongest earthquake in the world today was an M 5.8-5.9 in the Izu Islands south of Honshu, Japan. JMA reported it was lightly felt in the area of southeastern Honshu, Japan. The last earthquake of larger magnitude within about 200 km of this epicenter in the Izu Islands was an M 6.4-6.6 on November 29, 2021. Forecast 150429 had expected enhanced seismicity in this area was likely around February 6, 2023. This activity is at 100 degrees from the M 7.6 in Michoacan, Mexico of September 19, 2022 and may have been promoted by energy from that source.

O: 5FEB2023 00:03:20 32.7N 141.7E Mw=5.8 EMSC IZU ISLANDS, JAPAN REGION

P: 6FEB2023 150429 34.0N 139.0E 3.5-5.9 ABBAA Central/So. Honshu Japan

An M 5.5 moderately large earthquake also shook the area of Coquimbo, Chile today. NEIC reported it was felt with intensity IV in Coquimbo at Coquimbo and La Serena. GUC reported this earthquake was felt with intensity VI in Coquimbo at La Serena,Andacollo; V in La higuera, Monte Patria, Rio Hurtado, Paiguano, Vicuna, Combarbala, Ovalle, Punitaqui, Tongoy; IV in Canela, Illapel; III in Salamanca, and Punta de Choros; and IV in Atacama at Copiapo, Tierra Amarilla, Alto del Carmen, Freirina, Huasco and Vallenar, Chile. This earthquake was preceded by a series of foreshocks over the past day including and M 4.8 yesterday. An M 4.0 foreshock today was felt with intensity II in Coquimbo and La Serena. A similar event of M 5.5 hit about 100 km south of today's epicenter on January 12, 2023 but the last with significantly larger magnitude in this area was an M 5.8 on May 2, 2021, the largest in this region in the past 2.5 years. Forecast 150572 had expected today's event in this region was likely around February 5, 2023.

Forecast 150572 had expected today's event with magnitude up to M 5.6 was likely within about 100 km around February 5, 2023. This activity is located at 147 degrees from the M 7.2 in the Molucca area of January 18 and was probably promoted by energy from that source.

O: 5FEB2023 01:02 29.7S 71.3W mb=5.5 GUC Coquimbo at La Serena,Andacoll

O: 4FEB2023 11:52:14 29.4S 72.8W ML=4.2 EMSC OFF COAST OF COQUIMBO, CHILE

O: 5FEB2023 01:02:45 29.7S 71.1W Mw=5.5 EMSC COQUIMBO, CHILE

O: 4FEB2023 10:39:53 29.8S 71.7W mb=4.0 EMSC OFFSHORE COQUIMBO, CHILE

P: 5FEB2023 150572 29.0S 72.0W 4.0-5.6 AAAAA Coast Central Chile

An M 5.9 also occurred today in the region of Eastern New Guinea. NEIC reported maximum shaking with intensity V in the Eastern Highlands in Kainantu. Intensity II-III was also felt in Goroka, Lae Morobe, Mount Hagen and Port Moresby. It was preceded less than an hour earlier by and M 4.4 regional foreshock. This is the strongest event in New Guinea within about 200 km of this epicenter since an M 7.6 on September 10, 2022. This is probably an aftershock - the largest to date - of that event. Forecast 150357 had expected today's event within about 50 km was likely around February 2, 2023.

O: 4FEB2023 12:22:37 6.4S 146.3E Mw=5.9 EMSC EASTERN NEW GUINEA REG., P.N.G

P: 2FEB2023 150357 7.0S 146.0E 4.0-5.4 AAAAA New Ireland

An unusually large M 4.5 occurred today in Western Australia. NEIC reported it was felt in this region with intensity II-III in Perth and Albany. This is the strongest earthquake in western Australia within about 250 km of this epicenter since an M 4.7 about 200 km southeast of this on January 5, 2023 and an M 4.8 about 100 km southwest on January 24, 2022. The last such event in this area north of today's epicenter occurred in 2009. Forecast 150587 had expected this event within about 200 km was likely around February 6, 2023. When the event occurred in January, 2023 this summary noted:

This activity is at 142 degrees from the M 7.6 in Michoacan, Mexico of September 19, 2022 and at the third node from the M 6.8 in Argentina of January 20, 2023 and may have been promoted by energy from those sources.

O: 05FEB2023 05:04:27 33.3S 117.0E ML=2.7 EMSC WESTERN AUSTRALIA

O: 05FEB2023 01:13:58 33.4S 117.0E ML=2.5 EMSC WESTERN AUSTRALIA

O: 5FEB2023 00:40:01 32.8S 117.5E mb=4.5 EMSC WESTERN AUSTRALIA

P: 6FEB2023 150587 31.0S 118.0E 2.0-4.4 ABAAA So. Australia

An M 3.9 occurred today in the British Columbia region of Canada. NEIC reported it was felt in British Columbia in Kimberley, Cranbrook, Invermere, Nelson, Castlegar and White Rock and in Porthill, Idaho. This unusual event is the strongest earthquake within about 200 km of this epicenter since an M 4.4 about 150 km north of today's epicenter on February 14, 2021. Similar earthquakes of M 3.9 and 4.1 hit about 150 km south of today's epicenter on April 24, 2015. Forecast 150494 had expected seismic enhancement south of this in northern Montana was likely around February 7, 2023. This event is at 104 degrees from the M 7.2 in the Molucca area of January 18 and may have been promoted by energy from that source.

O: 5FEB2023 04:39:10 49.9N 116.4W ML=3.9 EMSC BRITISH COLUMBIA, CANADA

P: 7FEB2023 150494 47.5N 115.8W 2.0-3.9 ACAAA Montana/Idaho

The strongest earthquake in the U.S. or Canada today was an M 4.2 in the central

Andreanof Islands, Aleutians, Alaska. This is the strongest earthquake within about 200 km of this epicenter since an M 4.2 on November 14, 2022. The last such earthquake in the western or central Andreanof Islands of larger magnitude was an M 4.8 on December 5, 2022, two months ago. Forecast 150517 had expected today's activity within about 50 km around February 4.

O: 4FEB2023 18:09:48 51.7N 177.5W mb=4.2 EMSC ANDREANOF ISLANDS, ALEUTIAN IS

P: 4FEB2023 150517 51.8N 178.0W 3.5-4.9 AAAAA Andreanoff Isls, Aleutians

The strongest earthquake within the western U.S. (outside Alaska) occurred as an M 3.3 near the California border in Nevada. It may have been triggered by SFE (see below). The last earthquake of M>=3.3 in this area of Nevada was an M 3.7 on January 28, 2023. At the time this summary noted in this regard:

"An M 3.7 was also felt in the area of Nevada near the border with California today. NEIC reported it may have been felt with intensity II in Nevada at Fallon and Glenbrook. The last earthquake in Nevada within about 50 km of this epicenter with M>=3.7 occurred on August 30, 2022 with M 3.9. The last of significantly larger magnitude occurred nearly a year ago as an M 4.7 on February 15, 2022." (January 29, 2023)

Forecast 150421 had expected today's event within about 50 km was likely around February 3.

O: 05FEB2023 03:25:30 38.2N 117.9W ML=2.5 EMSC NEVADA

O: 05FEB2023 03:32:24 38.2N 117.9W ml=2.2 EMSC NEVADA

O: 5FEB2023 03:23:06 38.2N 117.9W ML=3.3 EMSC NEVADA

P: 3FEB2023 150421 37.8N 118.2W 2.5-4.8 AAAAA California/Nevada area

The largest solar flare today was an C6.6 beginning at 0316 UT on February 5. This is the strongest flare in the past 10 days - since an M2.8 on January 26, 2023 (#4280). While it was short, it apparently helped trigger a series of events in Nevada, including the largest event in California and Nevada today - an M 3.3 and aftershocks of 2.2 and 2.5. These occurred at the maximum X-ray output of this flare. Following is the flare data (SWPC) for this solar data:

SOLAR FLARE ACTIVITY

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

#------------------------------------------------------------------------------

XXXX 0316 0326 0331 C6.6 (February 5, 2023) 2.6E-03

The strongest earthquake in the U.S. outside Alaska today was an M 3.7 in western Texas. NEIC reported this earthquake of M 3.7 in Western Texas was felt with intensity II-III in the area(s) of Western Texas. This event occurred near local solar noon at a longitude consistent with tidal triggering with today's full moon and was probably promoted by tidal stresses. The last earthquake within about 100 km of this epicenter in western Texas with M>=3.7 was an M 4.9 on November 24, 2022. An M 5.4 hit the area on November 16, 2022. These are probably aftershocks of that event. Forecast 150451 had expected today's event within about 10 km around February 6, 2023. This activity is at the third node (120 degrees) from the M 7.2 in the Molucca area of January 18 and may have been promoted by energy from that source.

O: 05FEB2023 00:48:21 31.7N 104.2W ML=2.5 EMSC WESTERN TEXAS

O: 4FEB2023 19:40:20 31.6N 104.0W mb=3.7 EMSC WESTERN TEXAS

P: 6FEB2023 150451 31.7N 104.0W 2.0-4.0 AAAAA SW U.S.A

A series of light earthquakes also occurred in the northern Gulf of California today, south of Southern California. These events of M 3.5-3.9 were not reported felt in this remote area which occasionally sees swarms like this related to solar or flare activity. Forecast 150403 had expected this activity within this area around February 5. This activity is at 102 degrees from the M 7.6 in New Guinea (and today's aftershock of M 5.9) of September 10, 2022 and may have been promoted by energy from that source.

O: 04FEB2023 10:00:55 30.8N 114.3W ML=3.5 EMSC GULF OF CALIFORNIA

O: 04FEB2023 10:22:20 30.8N 114.1W ML=3.7 EMSC GULF OF CALIFORNIA

O: 04FEB2023 10:41:18 30.8N 114.1W ML=3.5 EMSC GULF OF CALIFORNIA

O: 04FEB2023 10:43:11 30.9N 114.2W ML=3.9 EMSC GULF OF CALIFORNIA

O: 04FEB2023 14:05:18 30.9N 114.5W ML=3.6 EMSC GULF OF CALIFORNIA

O: 04FEB2023 14:26:49 30.9N 114.2W ML=3.5 EMSC GULF OF CALIFORNIA

O: 4FEB2023 10:13:24 30.4N 114.3W ML=3.5 EMSC GULF OF CALIFORNIA

P: 5FEB2023 150403 30.0N 114.0W 3.5-5.1 AAAAA Gulf of California

Today's earthquake and forecast map follows. Stippled White areas are nodal distances (360/n, n an integer) from the earthquake of M 7.2 in the area of the Molucca Sea, January 18, 2023, where promoted seismicity is considered likely.

Today's projected seismicity map follows for the coming week.

OTHER GLOBAL EARTHQUAKE ACTIVITY

ASIA

O: 4FEB2023 07:34:41 22.8N 96.0E mb=4.3 EMSC MYANMAR

P: 2FEB2023 150407 20.0N 96.0E 4.0-5.6 ACAAA Myanmar

O: 5FEB2023 06:53:16 24.6N 93.5E ML=2.9 EMSC MANIPUR, INDIA REGION

P: 5FEB2023 150407 25.0N 93.0E 4.0-5.6 AAAAA Myanmar

O: 4FEB2023 10:47:31 36.4N 71.1E mb=4.1 EMSC HINDU KUSH REGION, AFGHANISTAN

O: 04FEB2023 21:24:56 37.3N 71.5E mb=4.3 EMSC HINDU KUSH REGION, AFGHANISTAN

O: 04FEB2023 12:23:27 37.5N 72.8E mb=4.7 EMSC TAJIKISTAN

P: 1FEB2023 150432 36.0N 72.0E 3.8-5.6 BAAAA Hindu Kush/Pakistan

P: 6FEB2023 150432 37.0N 72.0E 3.8-5.9 AAAAA Hindu Kush/Pakistan

O: 4FEB2023 14:14:05 44.5N 80.8E mb=4.3 EMSC KAZAKHSTAN-XINJIANG BORDER REG

P: 3FEB2023 150489 40.0N 82.0E 4.0-5.6 ACAAA Kirgizstan/Xinjiang

O: 5FEB2023 01:14:22 55.9N 162.6E mb=4.8 EMSC NEAR EAST COAST OF KAMCHATKA

P: 5FEB2023 150526 55.0N 163.0E 4.0-5.6 AAAAA Komandorsky Isl

INDONESIA AND PHILIPPINES

O: 04FEB2023 08:44:48 0.5S 123.1E ML=4.4 EMSC SULAWESI, INDONESIA

O: 04FEB2023 17:49:22 0.6S 123.6E ML=4.4 EMSC SULAWESI, INDONESIA

O: 4FEB2023 07:30:34 0.4S 123.1E ML=4.1 EMSC SULAWESI, INDONESIA

P: 5FEB2023 150332 0.0N 122.0E 4.0-5.4 AAAAA Celebes Sea

O: 5FEB2023 04:15:25 2.2N 121.0E ML=4.6 EMSC CELEBES SEA

P: 7FEB2023 150342 1.0N 123.0E 4.0-5.4 ABBAA Mindanao, Philippines

O: 5FEB2023 01:40:30 3.3N 127.2E ML=4.0 EMSC KEPULAUAN TALAUD, INDONESIA

P: 4FEB2023 150340 3.0N 127.0E 4.0-5.8 AAAAA Halmahera

O: 4FEB2023 11:43:35 4.3S 144.5E mb=4.4 EMSC NEAR N COAST OF NEW GUINEA, PN

P: 7FEB2023 150362 5.0S 144.0E 4.0-5.5 BAAAA Papua New Guinea

O: 5FEB2023 04:40:19 5.2S 152.2E mb=4.7 EMSC NEW BRITAIN REGION, P.N.G.

P: 1FEB2023 150358 6.0S 151.0E 4.0-5.6 BAAAA New Ireland

P: 27JAN2023 150082 5.0S 153.0E 4.0-5.4 CAAAA New Britain

O: 4FEB2023 22:59:18 7.2S 130.1E ML=4.2 EMSC KEP. TANIMBAR REGION, INDONESI

P: 6FEB2023 150371 6.0S 130.0E 4.0-5.4 ABAAA West Irian, PNG

O: 5FEB2023 05:10:22 7.4S 127.8E ML=4.5 EMSC KEPULAUAN BARAT DAYA, INDONESI

P: 5FEB2023 150348 8.0S 127.0E 4.0-5.6 AAAAA Banda Sea

O: 4FEB2023 17:34:13 14.8N 119.4E ML=4.5 EMSC LUZON, PHILIPPINES

P: 6FEB2023 150384 14.0N 121.0E 3.5-5.0 AABAA Luzon, Philippines

O: 4FEB2023 12:22:37 6.4S 146.3E Mw=5.9 EMSC EASTERN NEW GUINEA REG., P.N.G

P: 2FEB2023 150357 7.0S 146.0E 4.0-5.4 AAAAA New Ireland

CENTRAL AND SOUTH AMERICA

O: 5FEB2023 01:02 29.7S 71.3W mb=5.5 GUC Coquimbo at La Serena,Andacoll

O: 4FEB2023 11:52:14 29.4S 72.8W ML=4.2 EMSC OFF COAST OF COQUIMBO, CHILE

O: 5FEB2023 01:02:45 29.7S 71.1W Mw=5.5 EMSC COQUIMBO, CHILE

O: 4FEB2023 10:39:53 29.8S 71.7W mb=4.0 EMSC OFFSHORE COQUIMBO, CHILE

P: 5FEB2023 150572 29.0S 72.0W 4.0-5.6 AAAAA Coast Central Chile

O: 4FEB2023 12:48:41 11.7N 88.4W mb=4.7 EMSC OFF COAST OF CENTRAL AMERICA

O: 4FEB2023 16:35:40 12.6N 88.2W mb=4.6 EMSC OFFSHORE EL SALVADOR

P: 4FEB2023 150389 12.0N 87.0W 3.5-5.5 AAAAA Nicaragua

O: 4FEB2023 10:03:02 18.0N 102.5W ML=3.9 EMSC OFFSHORE MICHOACAN, MEXICO

P: 2FEB2023 150387 19.0N 101.0W 3.5-5.3 AABAA Michoacan, Mexico

O: 4FEB2023 17:22:54 18.2N 66.2W Md=3.4 EMSC PUERTO RICO

O: 05FEB2023 01:54:43 18.1N 66.8W Md=3.0 EMSC PUERTO RICO

P: 3FEB2023 150394 18.0N 67.0W 3.4-5.2 AAAAA Puerto Rico

O: 4FEB2023 12:36:53 18.5N 73.5W ML=3.2 EMSC HAITI REGION

P: 7FEB2023 150395 19.0N 74.0W 3.4-5.4 BAAAA Puerto Rico

O: 4FEB2023 07:20:49 19.7S 69.5W mb=4.0 EMSC TARAPACA, CHILE

P: 3FEB2023 150578 20.0S 70.0W 4.0-5.6 AAAAA So. Peru/Bolivia

NEIC reported this earthquake of M 4.0 in northern Chile was felt with intensity II-III in the area(s) of northern Chile in Iquique, Tarapaca.

O: 4FEB2023 17:41:21 24.4S 68.8W mb=4.3 EMSC ANTOFAGASTA, CHILE

P: 8FEB2023 150569 24.0S 69.0W 4.0-5.8 BAAAA Coast No. Chile

O: 4FEB2023 11:04:01 28.1N 112.3W ML=4.0 EMSC GULF OF CALIFORNIA

P: 2FEB2023 150403 28.0N 112.0W 3.5-5.1 AAAAA Gulf of California

AFRICA AND EUROPE

No significant (M>=5) or unusual earthquakes were reported in Europe today.

SOUTHWEST PACIFIC

O: 4FEB2023 21:03:52 17.6S 178.6W mb=4.3 EMSC FIJI REGION

P: 4FEB2023 150566 18.0S 178.0W 4.0-5.4 AAAAA Tonga Islands

O: 4FEB2023 22:10:34 19.9S 173.7W mb=4.8 EMSC TONGA

P: 3FEB2023 150579 20.0S 174.0W 4.0-5.5 AAAAA Tonga Islands

O: 5FEB2023 05:12:24 21.9S 174.1W mb=5.0 EMSC TONGA

P: 3FEB2023 150579 20.0S 174.0W 4.0-5.5 ABAAA Tonga Islands

OCEAN RIDGES

No significant (M>=5) or unusual earthquakes were reported on Ocean Ridges today.

ZEALANDIA AND AUSTRALIA REGION

O: 05FEB2023 05:04:27 33.3S 117.0E ML=2.7 EMSC WESTERN AUSTRALIA

O: 05FEB2023 01:13:58 33.4S 117.0E ML=2.5 EMSC WESTERN AUSTRALIA

O: 5FEB2023 00:40:01 32.8S 117.5E mb=4.5 EMSC WESTERN AUSTRALIA

P: 6FEB2023 150587 31.0S 118.0E 2.0-4.4 ABAAA So. Australia

O: 4FEB2023 19:24:50 33.0S 179.2E ML=4.0 EMSC SOUTH OF KERMADEC ISLANDS

P: 29JAN2023 150315 35.0S 179.0E 3.0-4.5 BBAAA North Island, N.Z.

JAPAN AND KURIL ISLANDS

O: 4FEB2023 16:40:38 22.9N 144.1E mb=4.5 EMSC VOLCANO ISLANDS, JAPAN REGION

P: 3FEB2023 150413 23.0N 143.0E 4.0-5.6 AAAAA Volcano Islands

O: 5FEB2023 00:03:20 32.7N 141.7E Mw=5.8 EMSC IZU ISLANDS, JAPAN REGION

P: 6FEB2023 150429 34.0N 139.0E 3.5-5.9 ABBAA Central/So. Honshu Japan

O: 5FEB2023 00:45:31 44.7N 149.3E mb=4.8 EMSC KURIL ISLANDS

P: 6FEB2023 150511 45.0N 149.0E 3.5-5.4 AAAAA So. Kurils