Sunspot region AR11921

Number of
sunspots
Size Class Magn. Class Spot Location
2013/12/10 2 120 HSX N06E75
2013/12/11 2 350 HKX N06E62
2013/12/12 2 350 HKX N07E50
2013/12/13 2 360 HKX N08E37
2013/12/14 8 350 CKO N07E23
2013/12/15 9 380 CKO N07E10
2013/12/16 9 400 HKX N07W03
2013/12/17 7 300 CKO N06W15
2013/12/18 7 300 CKO N06W15
2013/12/19 2 220 DSO N06W43
2013/12/20 2 220 HAX N06W57
2013/12/22 2 180 HAX N07W85
2013/12/23 1 60 HSX N07W94
2013/12/24 1 60 HSX N07W0*
C
4

The top 4 solar flares from sunspot region 11921

Start Maximum End
1C8.542013/12/1222:0522:1422:19
2C3.772013/12/0916:5116:5617:02
3C2.282013/12/1910:1410:2610:31
4C2.052013/12/1908:1708:2808:49

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Last X-flare2024/10/31X2.0
Last M-flare2024/11/05M2.6
Last geomagnetic storm2024/10/12Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
September 2024141.4 -74.1
November 2024215.8 +74.4
Last 30 days161.1 +7.2

This day in history*

Solar flares
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21998X1.21
32014X1.14
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52004M5.72
DstG
12023-172G3
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*since 1994

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