Sunspot region AR12872

Number of
sunspots
Size Class Magn. Class Spot Location
2021/09/20 7 30 CRO N19E42
2021/09/21 4 10 BXO N18E25
2021/09/22 9 70 CAI N17E14
2021/09/23 15 120 CAI N17E01
2021/09/24 10 80 CAO N17W12
2021/09/25 9 60 CRO N17W26
2021/09/26 7 40 CRO N16W38
2021/09/27 4 10 BXO N16W53
B
5

The top 5 solar flares from sunspot region 12872

Start Maximum End
1B4.22021/09/2123:5123:5523:59
2B3.72021/09/2615:3815:4716:10
3B3.42021/09/2211:1711:2511:30
4B1.92021/09/2423:3423:3823:42
5B1.82021/09/2415:5716:0516:09

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Space weather facts

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
April 2025147 -7.6
Last 30 days128.8 -21.8

This day in history*

Solar flares
12001X28.5
22001X2.01
32001X1.59
42014M9.35
52017M8.22
DstG
11960-272G3
21973-173G3
32001-101G1
41976-101G1
51994-96G3
*since 1994

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