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
The maximum X-ray flux of the past two hours is:
M6.17

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Latest alerts

13:39 UTC - Solar flare

Strong M6.17 flare from sunspot region 3981

alert


13:21 UTC - Radio Blackout

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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