Sunspot region AR11877

Number of
sunspots
Size Class Magn. Class Spot Location
2013/10/19 1 120 HSX S11E75
2013/10/20 4 260 CKO S12E61
2013/10/21 8 390 FHO S13E55
2013/10/22 10 400 CHO S13E38
2013/10/23 15 390 DKI S13E23
2013/10/24 17 320 DKI S12E09
2013/10/25 19 440 DKC S12W03
2013/10/26 16 390 DHI S12W16
2013/10/27 15 320 CHI S12W30
2013/10/28 15 320 CHI S12W30
2013/10/29 13 230 DAI S12W56
2013/10/30 9 310 DKO S12W71
2013/10/31 2 160 DAO S13W81
CMX
1241

The top 10 solar flares from sunspot region 11877

Start Maximum End
1X1.342013/10/2400:2100:3000:35
2M2.812013/10/3113:3613:5114:02
3M2.022013/10/2811:3211:5312:39
4M1.262013/10/2617:0417:1517:26
5M1.112013/10/2618:5019:2019:23
6C8.212013/10/2422:0522:1022:15
7C7.412013/10/2608:3708:4608:49
8C6.382013/10/2608:5208:5508:57
9C5.712013/10/2713:3913:4714:06
10C4.012013/10/2613:1913:2113:24
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

alert


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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