Sunspot region AR12877

Number of
sunspots
Size Class Magn. Class Spot Location
2021/09/26 4 10 BXO S13E06
2021/09/27 4 20 CRO S17W12
2021/09/28 10 30 CRO S18W27
2021/09/29 14 130 DAI S18W41
2021/09/30 13 200 DAO S18W52
2021/10/01 4 200 DAO S18W66
2021/10/02 2 150 DAO S20W78
2021/10/03 1 30 HSX S21W93
2021/10/04 1 30 HSX S21W0*
BC
287

The top 10 solar flares from sunspot region 12877

Start Maximum End
1C2.82021/09/2921:4621:5622:02
2C1.92021/10/0307:0707:2207:46
3C1.72021/09/2922:3422:4522:50
4C1.72021/10/0222:2322:4022:57
5C1.42021/09/2922:1022:1322:17
6C1.22021/09/3012:4312:4912:55
7C1.02021/09/2914:1514:2114:25
8B9.52021/09/3005:4205:4905:55
9B9.42021/10/0402:5203:0703:18
10B8.62021/09/2911:1111:1911:25
Currently there's no noteworthy space weather

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04:15 UTC - Geomagnetic activity

Active geomagnetic conditions (Kp4) Threshold Reached: 03:57 UTC

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The OVATION model predicts the Hemispheric Power Index to reach 50GW at 03:23 UTC


Wednesday, 16 April 2025
21:45 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 21:36 UTC

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21:00 UTC - Geomagnetic activity

Severe G4 geomagnetic storm (Kp8) Threshold Reached: 20:55 UTC

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Strong G3 geomagnetic storm (Kp7) Threshold Reached: 19:25 UTC

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Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/15M1.2
Last geomagnetic storm2025/04/16Kp8- (G4)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025120.5 -13.7
Last 30 days118.3 -22.1

This day in history*

Solar flares
12014X1.05
22016M9.63
32024M2.2
42022M1.9
52024M1.6
DstG
11965-162G4
22002-127G3
32001-114G3
41990-95G1
51957-89G2
*since 1994

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