Sunspot region AR12873

Number of
sunspots
Size Class Magn. Class Spot Location
2021/09/20 8 10 BXI N26W07
2021/09/21 8 110 DAO N25W23
2021/09/22 5 80 DAO N25W35
2021/09/23 6 10 BXO N26W48
2021/09/24 2 10 BXO N25W61
2021/09/25 2 10 BXO N25W73
BC
43

The top 7 solar flares from sunspot region 12873

Start Maximum End
1C1.82021/09/2111:4311:5311:57
2C1.12021/09/2108:5309:0309:16
3C1.02021/09/2606:2506:3106:38
4B8.92021/09/2110:0610:1610:21
5B5.22021/09/2111:0611:1111:16
6B2.32021/09/2106:4406:4906:54
7B1.62021/09/2114:1714:2914:34

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Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/22M1.3
Last geomagnetic storm2025/04/21Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025122.8 -11.4
Last 30 days117.7 -15.6

This day in history*

Solar flares
12014X1.99
22001M3.98
32004M3.25
42003M1.84
52024M1.3
DstG
11979-149G4
21989-108G2
31960-97G3
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51984-71G2
*since 1994

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