Sunspot region AR12394

Number of
sunspots
Size Class Magn. Class Spot Location
2015/07/31 1 120 HSX N12E65
2015/08/01 2 120 HAX N12E54
2015/08/02 4 140 HSX N12E41
2015/08/03 3 140 HAX N12E28
2015/08/04 4 120 CAO N12E14
2015/08/05 8 130 DAI N11E01
2015/08/06 12 120 CAO N11W12
2015/08/07 7 100 CAO N11W25
2015/08/08 8 80 CAO N11W38
2015/08/09 4 80 CSO N12W52
2015/08/10 2 50 CSO N12W64
2015/08/11 1 40 HSX N12W77
2015/08/12 1 30 HSX N12W90
2015/08/13 1 30 HSX N12W0*
BC
43

The top 7 solar flares from sunspot region 12394

Start Maximum End
1C2.972015/08/0718:1118:1518:19
2C1.122015/08/0117:4717:5117:56
3C1.042015/08/0815:0915:1515:23
4B9.362015/08/1210:2610:2910:33
5B9.222015/08/0715:5716:0116:12
6B7.732015/08/0504:4704:5104:53
7B5.782015/08/0121:0021:0321:09

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Space weather facts

Last X-flare2026/03/30X1.5
Last M-flare2026/04/09M1.0
Last geomagnetic storm2026/04/03Kp7- (G3)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 2026107.7 +21.8
Last 30 days100 +44.8

This day in history*

Solar flares
12013M9.34
22024M5.47
32001M3.41
42000M1.63
52000M1.5
DstG
12001-271G4
21990-190G3
31978-114G4
41982-110G2
51959-88G1
*since 1994

Aurora on this day in history

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