Sunspot region AR11917

Number of
sunspots
Size Class Magn. Class Spot Location
2013/12/08 8 60 DAO S16E63
2013/12/09 8 210 DAI S16E57
2013/12/10 10 240 CAI S16E45
2013/12/11 18 250 DKI S17E31
2013/12/12 13 210 DAI S15E17
2013/12/13 12 190 CAI S15E04
2013/12/14 11 220 DAI S15W10
2013/12/15 26 260 DKC S15W24
2013/12/16 33 340 DKC S15W37
2013/12/17 16 320 EKC S15W51
2013/12/18 16 320 EKC S15W51
2013/12/19 4 420 DKI S16W77
2013/12/20 2 180 CSO S17W91
C
16

The top 10 solar flares from sunspot region 11917

Start Maximum End
1C6.942013/12/1303:0503:1503:31
2C5.222013/12/1603:2103:3003:44
3C4.942013/12/1206:3806:5907:37
4C4.182013/12/0911:1511:3011:48
5C3.922013/12/1122:4923:0623:17
6C3.72013/12/1216:3616:4316:48
7C3.282013/12/1411:0011:2411:40
8C3.272013/12/1211:3211:3912:09
9C3.172013/12/1301:3301:3801:41
10C3.052013/12/0717:3417:4117:52
The maximum X-ray flux of the past two hours is:
M1.5

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13:39 UTC - Solar flare

Strong M6.17 flare from sunspot region 3981

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Moderate R2 radio blackout in progress (≥M5 - current: M6.1)


13:18 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M3.66)


09:33 UTC - Solar flare

Moderate M1.42 flare

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09:15 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.25)


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Space weather facts

Last X-flare2025/01/04X1.85
Last M-flare2025/02/03M1.4
Last geomagnetic storm2025/01/04Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
December 2024154.5 +2
February 2025150.5 -4
Last 30 days142.5 +0.6

This day in history*

Solar flares
12025M8.7
22001M3.53
32025M3.1
42025M2.5
52025M1.4
DstG
11992-170G4
21969-161G2
31982-82G1
41989-74G2
52022-66G1
*since 1994

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