Sunspot region AR12909

Number of
sunspots
Size Class Magn. Class Spot Location
2021/12/15 6 150 DAO S21E70
2021/12/16 5 150 DAO S19E66
2021/12/17 6 210 DSO S20E42
2021/12/18 6 210 DAO S20E29
2021/12/19 4 120 CAO S21E16
2021/12/20 5 100 CSO S20E03
2021/12/21 3 80 HAX S19W13
2021/12/22 3 70 HSX S21W26
2021/12/23 2 50 HAX S21W40
2021/12/24 1 20 HRX S22W53
BC
19

The top 10 solar flares from sunspot region 12909

Start Maximum End
1C4.92021/12/2119:0219:2319:53
2C4.52021/12/2003:0803:2103:27
3C3.42021/12/1615:1915:2715:31
4C3.02021/12/1623:3523:3923:43
5C2.32021/12/1712:5513:1213:25
6C1.82021/12/2509:0009:1309:32
7C1.42021/12/1603:2503:3403:41
8C1.32021/12/1603:4403:5404:04
9C1.12021/12/1801:4001:5402:13
10B7.82021/12/1603:1303:1903:24

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Space weather facts

Last X-flare2026/03/30X1.5
Last M-flare2026/04/09M1.0
Last geomagnetic storm2026/04/03Kp7- (G3)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 202685.9 -0
Last 30 days92.1 +30.2

This day in history*

Solar flares
12014X1.05
22016M9.63
32025M4.4
42024M2.2
52022M1.9
DstG
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*since 1994

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