Sunspot region AR12400

Number of
sunspots
Size Class Magn. Class Spot Location
2015/08/12 4 10 BXO N17E36
2015/08/13 2 10 BXO N17E22
2015/08/14 7 50 DAO N17E07
2015/08/15 5 50 CAO N17W05
2015/08/16 5 30 CAO N18W18
2015/08/17 2 10 AXX N17W33
B
2

The top 2 solar flares from sunspot region 12400

Start Maximum End
1B8.042015/08/1310:3010:4511:00
2B6.572015/08/1116:5617:0017:09

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Last X-flare2025/03/28X1.1
Last M-flare2025/04/01M2.4
Last geomagnetic storm2025/03/27Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
Last 30 days128.1 -22.5

This day in history*

Solar flares
12001X28.5
22001X2.01
32001X1.59
42014M9.35
52017M8.22
DstG
11960-272G3
21973-173G3
32001-101G1
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*since 1994

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