Sunspot region AR11543

Number of
sunspots
Size Class Magn. Class Spot Location
2012/08/08 4 140 CSO N21E70
2012/08/09 4 230 DAO N21E58
2012/08/10 6 260 DHO N21E45
2012/08/11 4 250 DHO N21E33
2012/08/12 9 250 DHO N20E20
2012/08/13 5 230 DSO N20E07
2012/08/14 12 250 DKO N20W05
2012/08/15 7 250 CKO N22W19
2012/08/16 9 300 CHO N21W34
2012/08/17 2 360 HHX N22W48
2012/08/18 5 320 CKO N24W59
2012/08/19 3 300 HHX N23W74
2012/08/20 3 180 DSO N23W86
BC
210

The top 10 solar flares from sunspot region 11543

Start Maximum End
1C5.172012/08/1612:4113:1613:48
2C5.012012/08/1400:2300:3100:42
3C4.112012/08/1312:3312:4012:49
4C2.212012/08/1716:0516:1116:15
5C1.962012/08/1715:2115:3215:42
6C1.572012/08/1304:0504:1304:27
7C1.572012/08/1411:2811:3711:43
8C1.262012/08/1015:4415:4715:50
9C1.252012/08/1922:4323:1523:38
10C1.212012/08/1503:3703:4603:54

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Space weather facts

Last X-flare2026/02/04X4.21
Last M-flare2026/03/28M1.3
Last geomagnetic storm2026/03/25Kp5+ (G1)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
February 202678.2 -34.3
March 202685.2 +7
Last 30 days85.2 +8.6

This day in history*

Solar flares
12001X2.45
22014X1.45
32023X1.2
42024M3.2
52001M3.13
DstG
11959-154G3
21979-129G3
31989-125G3
41957-121G4
51984-86G2
*since 1994

Aurora on this day in history

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