Sunspot region AR12187

Number of
sunspots
Size Class Magn. Class Spot Location
2014/10/12 1 100 HSX S08E79
2014/10/13 3 120 CSO S09E65
2014/10/14 3 210 ESO S10E54
2014/10/15 5 210 CSO S09E44
2014/10/16 3 190 CAO S10E29
2014/10/17 6 220 CSO S10E16
2014/10/18 1 200 HSX S09W00
2014/10/19 10 210 CSO S09W12
2014/10/20 7 160 CSO S09W27
2014/10/21 1 160 HSX S08W41
2014/10/22 3 170 CSO S08W53
2014/10/23 2 110 CSO S10W67
2014/10/24 1 110 HSX S09W81
2014/10/25 1 70 HAX S08W93
2014/10/26 1 70 HAX S08W0*
BC
34

The top 7 solar flares from sunspot region 12187

Start Maximum End
1C3.662014/10/1205:1005:1505:21
2C2.62014/10/1223:5200:1300:29
3C2.532014/10/1206:1906:3706:41
4C1.322014/10/1123:0423:2323:38
5B9.122014/10/1210:0010:1310:19
6B8.962014/10/1103:2603:4504:25
7B8.512014/10/1202:3002:4002:47

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Space weather facts

Last X-flare2026/03/30X1.5
Last M-flare2026/04/02M3.5
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
April 2026130 +51.8
Last 30 days92.6 +25.1

This day in history*

Solar flares
12001X1.77
22017M8.35
31999M6.2
42001M3.57
52017M1.81
DstG
11979-168G4
21960-151G3
31992-105G2
42004-104G2
51994-103G3
*since 1994

Aurora on this day in history

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