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Sunspot region AR12146

Number of
sunspots		 Size Class Magn. Class Spot Location
2014/08/17 1 30 HSX N09E76
2014/08/18 2 80 HAX N09E62
2014/08/19 1 90 HAX N10E48
2014/08/20 1 150 HSX N08E35
2014/08/21 6 120 CSI N09E21
2014/08/22 7 140 CSO N10E07
2014/08/23 6 140 CSO N10W07
2014/08/24 9 170 CSO N10W18
2014/08/25 10 280 DKI N09W33
2014/08/26 11 290 DKI N09W46
2014/08/27 9 300 DKI N07W58
2014/08/28 4 240 DAI N07W72
2014/08/29 2 190 CSO N08W86
2014/08/30 2 190 CSO N08W0*
BCM
1202

The top 10 solar flares from sunspot region 12146

Start Maximum End
1M5.682014/08/2520:0620:2120:29
2M2.872014/08/2514:4615:1115:31
3C8.92014/08/2215:4015:5216:02
4C8.642014/08/2317:1917:2717:31
5C8.122014/08/2622:5423:2523:38
6C6.172014/08/2915:4315:5216:02
7C5.72014/08/2602:3402:4102:51
8C3.132014/08/2210:1310:2710:46
9C2.792014/08/1923:2523:3123:33
10C2.732014/08/2609:2309:2809:33
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Last X-flare2026/04/24X2.5
Last M-flare2026/04/28M1.11
Last geomagnetic storm2026/04/20Kp5 (G1)
Spotless days
Last 365 days3 days
20263 days (2%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
April 202679.3 -6.6
May 2026158 +78.7
Last 30 days90.5 -3.1

This day in history*

Solar flares
11998X1.61
22000M4.1
32024M2.7
42001M2.57
52013M1.61
DstG
11978-145G3
21977-98G2
32024-96G3
41960-95
51998-85G3
*since 1994

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