Sun flares
X-ray index
Diagram of the solar flare activity
X-ray emission of the Sun on Feb 21, 2011 and Feb 22, 2011 (GOES-15)
Solar flares on Feb 22, 2011
No solar flares of C, M and X-class were observed
Solar flares on Feb 21, 2011
10 solar flares were observed :
| Active region | Begin, UT | Max, UT | End, UT | |
|---|---|---|---|---|
| Flare of class C1.4 | 1161 | 18:25:00 | 18:35:00 | 18:47:00 |
| Flare of class C1.5 | 1158 | 15:39:00 | 15:44:00 | 15:55:00 |
| Flare of class C7.8 | 1158 | 10:08:00 | 10:12:00 | 10:15:00 |
| Flare of class C1.8 | 1158 | 10:00:00 | 10:04:00 | 10:07:00 |
| Flare of class C2.7 | 1158 | 09:01:00 | 09:06:00 | 09:09:00 |
| Flare of class C4.3 | 0 | 06:02:00 | 06:10:00 | 06:14:00 |
| Flare of class C4.1 | 1158 | 05:00:00 | 05:06:00 | 05:08:00 |
| Flare of class C1.5 | 1158 | 04:04:00 | 04:10:00 | 04:13:00 |
| Flare of class C1.8 | 1158 | 03:10:00 | 03:15:00 | 03:18:00 |
| Flare of class C4.6 | 1158 | 02:13:00 | 02:24:00 | 02:27:00 |