Sunspot region AR11909

Number of
sunspots
Size Class Magn. Class Spot Location
2013/11/28 2 140 DSO S18E69
2013/11/29 9 300 DKC S18E59
2013/11/30 14 320 DKC S18E45
2013/12/01 17 330 DKC S18E31
2013/12/02 23 350 DKC S18E20
2013/12/03 27 330 EKC S17E06
2013/12/04 17 250 EKC S18W07
2013/12/05 11 250 EKC S17W20
2013/12/06 19 200 DAI S17W34
2013/12/07 10 140 DSO S17W50
2013/12/08 7 100 CSO S17W61
2013/12/09 1 50 HSX S19W79
2013/12/10 1 40 HSX S19W93
2013/12/11 1 40 HSX S19W0*
BCM
161

The top 8 solar flares from sunspot region 11909

Start Maximum End
1M1.822013/12/0707:1707:2907:49
2C9.652013/12/0517:3517:4317:50
3C3.822013/12/0606:4306:4806:52
4C1.512013/11/3021:5421:5822:00
5C1.32013/12/0305:5406:1506:50
6C1.22013/11/3014:5414:5915:12
7C1.172013/11/3014:2314:2914:40
8B9.12013/11/3011:1611:2111:26

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Space weather facts

Last X-flare2026/02/04X4.21
Last M-flare2026/03/26M4.0
Last geomagnetic storm2026/03/25Kp5+ (G1)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
February 202678.2 -34.3
March 202681.4 +3.2
Last 30 days81.4 +3.6

This day in history*

Solar flares
12024X1.12
22025X1.1
32025X1.1
42024M9.7
52024M7.1
DstG
11959-176G3
21957-141G3
31984-105G3
42001-87G2
51976-78
*since 1994

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