Region 12420

Number of
sunspots
Size Class Magn. Class Spot Location
2015/09/21 12 270 EKC N09E71
2015/09/22 16 290 EKC N10E64
2015/09/23 13 280 EKC N10E50
2015/09/24 13 280 EKC N10E50
2015/09/25 19 200 EAI N09E22
2015/09/26 17 150 FAI N10E09
2015/09/27 15 140 FAI N10W04
2015/09/28 11 110 FAI N11W17
2015/09/29 9 100 ESO N11W31
2015/09/30 12 50 CSO N11W44
2015/10/01 2 40 CSO N12W57
2015/10/02 3 20 CRO N10W70
2015/10/03 3 10 BXO N11W84
2015/10/04 1 30 HAX N14W91
2015/10/05 1 30 HAX N14W0*
BCM
561

The top 10 solar flares from sunspot region 12420

Start Maximum End
1M1.52015/09/2004:5505:0305:17
2C8.82015/09/2105:1105:1805:22
3C4.22015/09/2101:5702:0402:08
4C2.82015/09/2100:1000:2100:29
5C2.72015/10/0318:0418:0918:15
6C1.52015/09/2103:5404:0004:05
7C1.12015/10/0316:2316:4416:52
8B9.12015/09/2013:4913:5413:58
9B6.32015/09/2103:2903:3303:37
10B5.42015/09/2118:5218:5318:54

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/10/26Kp5 (G1)
Number of spotless days in 2019:263
Current stretch spotless days:36

This day in history*

Solar flares
12001M3.4
22015C6.7
31998C5.7
42001C5.3
52001C5.3
ApG
1200335G1
2201328G2
3200624G1
4201621
5200018
*since 1994

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