Sunspot region AR11921

Number of
sunspots
Size Class Magn. Class Spot Location
2013/12/10 2 120 HSX N06E75
2013/12/11 2 350 HKX N06E62
2013/12/12 2 350 HKX N07E50
2013/12/13 2 360 HKX N08E37
2013/12/14 8 350 CKO N07E23
2013/12/15 9 380 CKO N07E10
2013/12/16 9 400 HKX N07W03
2013/12/17 7 300 CKO N06W15
2013/12/18 7 300 CKO N06W15
2013/12/19 2 220 DSO N06W43
2013/12/20 2 220 HAX N06W57
2013/12/22 2 180 HAX N07W85
2013/12/23 1 60 HSX N07W94
2013/12/24 1 60 HSX N07W0*
C
4

The top 4 solar flares from sunspot region 11921

Start Maximum End
1C8.542013/12/1222:0522:1422:19
2C3.772013/12/0916:5116:5617:02
3C2.282013/12/1910:1410:2610:31
4C2.052013/12/1908:1708:2808:49
The maximum X-ray flux of the past two hours is:
M3.15

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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)


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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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