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Sunspot region AR11928

Number of
sunspots		 Size Class Magn. Class Spot Location
2013/12/19 21 240 DAI S15W05
2013/12/20 24 360 EKC S16W19
2013/12/22 28 460 EKC S17W47
2013/12/23 22 380 EKC S17W61
2013/12/24 13 330 EKC S16W74
2013/12/25 8 130 DAI S16W87
2013/12/26 8 130 DAI S16W0*
CM
2911

The top 10 solar flares from sunspot region 11928

Start Maximum End
1M4.822013/12/2215:0615:1215:19
2M2.82013/12/2208:0508:1108:18
3M2.362013/12/2308:5909:0609:09
4M2.32013/12/2221:2322:0822:13
5M1.672013/12/2208:3308:3708:41
6M1.322013/12/2110:2710:3610:44
7M1.262013/12/2218:5519:0919:17
8M1.232013/12/2015:2615:3315:39
9M1.182013/12/2222:3622:4422:54
10M1.142013/12/2307:5307:5808:02
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Last X-flare2025/06/19X1.9
Last M-flare2025/10/03M1.2
Last geomagnetic storm2025/10/03Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
September 2025129.8 -3.7
October 2025140.1 +10.3
Last 30 days131.3 -1.2

This day in history*

Solar flares
12012M3.35
22024M1.2
31999C9.19
42024C8.0
52023C6.6
DstG
12024-153G3
21960-112G1
32002-108G2
42012-99G2
52015-97G2
*since 1994

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