Top 50 solar flares of the year 2011

On this page you will find an overview of the strongest solar flares of the year 2011 together with links to more information in our archive and a video (if available) of the event.

RegionStartMaximumEnd
1X9.962011/08/09126307:4808:0508:08
2X3.32011/02/15115801:4401:5602:06
3X3.032011/09/06128322:1222:2022:24
4X2.852011/11/03133920:1620:2720:32
5X2.742011/09/24130209:2109:4009:48
6X2.62011/09/07128322:3222:3822:44
7X2.142011/09/22130210:2911:0111:44
8X2.142011/03/09116623:1323:2323:29
9X1.342011/08/04126103:4103:5704:04
10X1.342011/07/30126102:0402:0902:12
11X1.072011/09/25130204:3104:5005:05
12X1.022011/09/24130212:3313:2014:10
13M9.612011/09/08128315:3215:4615:52
14M9.612011/02/18115809:5510:1110:15
15M9.492011/02/13115817:2817:3817:47
16M8.712011/08/03126113:1713:4814:10
17M8.372011/09/24130220:2920:3620:42
18M7.712011/09/06128301:3501:5002:05
19M7.572011/03/08116510:3510:4410:55
20M6.432011/09/25130202:2702:3302:37
21M6.292011/03/08116518:0818:2818:41
22M6.212011/11/02133921:5222:0122:19
23M62011/03/14116919:3019:5219:54
24M5.852011/09/26130205:0605:0805:13
25M5.772011/12/25138718:1118:1618:20
26M5.642011/10/02130500:3700:5000:59
27M5.442011/11/05133903:0803:3503:58
28M5.392011/09/25130215:2615:3315:38
29M5.292011/03/07116419:4320:1220:58
30M5.052011/08/08126318:0018:1018:18
31M5.042011/02/24116307:2307:3507:42
32M4.652011/09/04128611:2111:4511:50
33M4.562011/09/24130217:1917:2517:31
34M4.542011/09/25130208:4608:4908:52
35M4.432011/09/24130219:0919:2119:41
36M4.092011/09/24130217:5918:1518:24
37M3.862011/09/09128306:0106:1106:17
38M3.772011/09/26130214:3714:4615:02
39M3.722011/11/03133910:5811:1111:20
40M3.672011/08/09126303:1903:5404:08
41M3.652011/06/07122606:1606:4106:59
42M3.512011/12/31138913:0913:1513:19
43M3.432011/12/26138720:1220:3020:36
44M3.272011/02/14115817:2017:2617:32
45M3.192011/09/25130216:5116:5817:09
46M3.112011/11/03133923:2823:3623:44
47M32011/12/29138921:4321:5121:59
48M2.852011/09/23130223:4823:5600:04
49M2.812011/11/15134612:3012:4312:50
50M2.782011/12/29138913:4013:5014:01

G2 - Moderate geomagnetic storm

Observed Kp: 6
Threshold reached: 22:53 UTC

Current data suggests there is a high possibility for aurora to appear at the following high latitude regions in the near future

Gillam, MB, Iqaluit, NU
Nuuk
Reykjavik
Tromsø
Kiruna

Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future

Tórshavn
Oulu, Rovaniemi, Sodankylä, Utsjoki
Kirkenes, Trondheim
Murmansk
Luleå, Umeå

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Saskatoon, SK
Kuopio
Bergen
Arkhangelsk, Vorkuta
Sundsvall

Current data suggests there is a slight possibility for aurora to appear at the following middle latitude regions in the near future

Thunder Bay, ON, Winnipeg, MB
Tampere
Petrozavodsk
The strength of the interplanetary magnetic field is moderate (14.19nT), the direction is moderately South (-12.39nT).
The Disturbance Storm Time index predicts strong storm conditions right now (-103nT)

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Latest alerts

00:00 UTC - Geomagnetic activity

Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 22:52 UTC

alert


00:00 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 100GW at 00:59 UTC


Wednesday, 5 November 2025
23:30 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 22:14 UTC

alert


23:30 UTC - 10cm Radio Burst

Begin Time: 05/11/2025 22:01 UTC Maximum Time: 05/11/2025 22:01 UTC Duration: 5 minutes. Peak flux: 180 sfu


23:30 UTC - Type II Radio Emission

Begin Time: 05/11/2025 21:59 UTC Estimated Velocity: 1395km/sec.


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Space weather facts

Last X-flare2025/11/04X1.1
Last M-flare2025/11/05M8.6
Last geomagnetic storm2025/10/30Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
September 2025129.8 -3.7
November 202561.3 -68.6
Last 30 days92.8 -36.3

This day in history*

Solar flares
11997X12.9
22024X2.39
32004X1.34
42004M8.52
52014M7.85
DstG
12001-292G4
22000-159G3
32023-128G2
41957-87G2
51994-80G2
*since 1994

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