EXTERNAL FIELDS/EFFECTS
The geomagnetic field saw disturbed conditions today. The AP level was 10. High latitudes saw unsettled conditions with AP 18. Middle latitudes were at disturbed conditions with AP 11.
The geomagnetic field is expected to see active conditions October 2-3 with unsettled October 4. Solar activity is expected to be at moderate levels October 1-3 with a moderate chance (40%) of an M-class flare and 5% chance of an X-class flare. A proton storm is expected with 5% probability in this time period.
The maximum disturbance in the geomagnetic field today occurred with KP 4 at 11:00 UT, September 30, 2023.
The Wolf Sunspot number today was 107. Solar radio Flux 10.7 was 155 on September 30, 2023.
SOLAR FLARE ACTIVITY
Where applicable the strongest earthquakes associated with the largest flares
are listed. This may give some indication where SFE will be most likely in the
near future.
Flare # START MAX END CLASS DATE Flux (Jm-2)
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3430 0038 0048 0055 C2.4 (September 30, 2023) 2.5E-03
Southern Alaska M 3.2 00:46 UT
Macquarie Is. M 5.8 00:31 UT
3460 0055 0115 0128 C4.2 (September 30, 2023) 6.7E-03
Argentina M 4.4 01:21 UT
Texas M 3.0 01:11 UT
3500 0556 0600 0606 C8.0 (September 30, 2023) 3.9E-03
Loyalty Islands, M 4.9 06:10 UT
Texas M 3.1 06:08 UT
3530 0651 0656 0702 C2.4 (September 30, 2023) 1.5E-03
3580 1040 1046 1056 C2.6 (September 30, 2023) 2.1E-03
3620 1151 1157 1206 C9.6 (September 30, 2023) 5.6E-03
3630 1223 1229 1236 C4.9 (September 30, 2023) 3.2E-03
Spain M 4.0 12:46 UT
3660 1405 1418 1432 C3.9 (September 30, 2023) 4.6E-03
3670 1435 1444 1457 C5.1 (September 30, 2023) 1.7E-03
Coast of No. California M 4.7 15:25 UT
Central California M 2.7 14:45 UT
3770 1815 1825 1834 C4.7 (September 30, 2023) 4.4E-03
3690 1557 1607 1614 C6.3 (September 30, 2023) 1.8E-03
3760 1616 1635 1649 M1.2 (September 30, 2023) 1.8E-02
Ceram M 4.4 16:16 UT
Coast of No. California M 3.7 16:36 UT
3770 1815 1825 1834 C4.7 (September 30, 2023) 4.4E-03
3820 2026 2037 2056 C2.7 (September 30, 2023) 4.4E-03
3830 2118 2138 2139 C6.2 (September 30, 2023) 8.0E-03
Bolivia M 4.4 21:28 UT
Kyrgyzstan M 4.1 21:30 UT
3840 2139 2145 2152 C6.6 (September 30, 2023) 5.4E-03
3850 2341 2355 0012 C2.8 (September 30, 2023) 8.5E-04
New Guinea M 4.8 23:30 UT
Java M 4.7 00:18 UT
AP INDICIES
JANUARY 2023
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 14 8 7 21 8 4 6 8 5 7 9 9 12 11 30
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
AP: 14 6 15 7 6 17 9 7 4 7 11 9 9 5 5 9
FEBRUARY 2023
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 6 6 9 6 5 18 20 18 21 16 11 7 4 8 29
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28
AP: 24 6 6 7 8 17 6 22 6 10 26 94 28
MARCH 2023
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 8 9 22 15 22 15 11 8 17 11 7 8 3 17 29
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
AP: 8 7 8 10 13 8 17 60 66 15 8 3 5 6 17 21
APRIL 2023
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 13 15 15 13 11 9 8 8 6 14 6 4 6 7 9
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
AP: 4 8 13 12 5 9 7 66 76 10 15 23 19 20 10
MAY 2023
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 10 9 4 6 5 30 9 16 14 26 9 19 13 8 6
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
AP: 8 4 3 9 35 28 21 12 12 11 6 4 11 4 5 13
JUNE 2023
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 13 5 5 11 5 7 5 5 4 5 9 6 6 5 24
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
AP: 38 8 10 10 10 8 8 9 16 15 11 8 8 17 8
JULY 2023
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 5 5 5 4 7 11 18 8 4 5 8 6 7 20 8
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
AP: 10 24 16 5 10 13 9 6 7 11 21 7 6 9 9 6
AUGUST 2023
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 9 12 6 13 36 4 12 8 7 7 5 8 5 5 4
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
AP: 8 8 11 8 11 9 8 4 9 5 7 11 6 5 6 6
SEPTEMBER 2023
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 12 38 25 8 11 8 6 6 8 4 7 25 17 18 7
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
AP: 7 16 30 49 16 10 8 10 21 23 32 15 6 12 10
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