Sunspot region AR11865

Number of
sunspots
Size Class Magn. Class Spot Location
2013/10/09 2 60 CAO S20E73
2013/10/10 5 210 DAO S21E58
2013/10/11 15 220 DAI S22E45
2013/10/12 14 220 DAO S22E32
2013/10/13 20 200 DAO S22E19
2013/10/14 16 270 DKC S22E06
2013/10/15 10 120 CAI S22W08
2013/10/16 11 90 DAO S21W21
2013/10/17 3 50 DSO S22W37
2013/10/18 4 10 BXO S21W50
CM
137

The top 10 solar flares from sunspot region 11865

Start Maximum End
1M4.062013/10/0901:2301:4801:56
2M2.572013/10/1508:2608:3808:48
3M2.432013/10/1300:1200:4301:05
4M22013/10/1523:3123:3623:41
5M1.362013/10/1505:0405:0705:10
6M1.282013/10/1614:2614:3214:40
7M1.142013/10/1412:5613:1513:36
8C9.42013/10/1515:2215:3615:49
9C8.962013/10/1112:1412:2812:47
10C6.272013/10/1514:3714:5715:09

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Space weather facts

Last X-flare2026/03/30X1.5
Last M-flare2026/04/04M1.0
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 2026118.8 +32.8
Last 30 days102.1 +47

This day in history*

Solar flares
12001X1.14
22000M4.54
32003M3.68
42002M3.12
52002M1.68
DstG
11984-100G3
21971-97G2
32006-82G2
41959-73G2
51995-68G1
*since 1994

Aurora on this day in history

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