Sun flares
X-ray index
Diagram of the solar flare activity
X-ray emission of the Sun on Feb 17, 2011 and Feb 18, 2011 (GOES-15)
Solar flares on Feb 18, 2011
20 solar flares were observed :
| Active region | Begin, UT | Max, UT | End, UT | |
|---|---|---|---|---|
| Flare of class M1.3 | 1162 | 20:56:00 | 21:04:00 | 21:14:00 |
| Flare of class C7.1 | 1162 | 19:02:00 | 19:18:00 | 19:28:00 |
| Flare of class C3.2 | 1158 | 18:13:00 | 18:21:00 | 18:25:00 |
| Flare of class C3.8 | 1162 | 17:48:00 | 17:53:00 | 18:02:00 |
| Flare of class C2.1 | 1162 | 16:42:00 | 16:45:00 | 16:53:00 |
| Flare of class C2.3 | 1162 | 16:36:00 | 16:39:00 | 16:41:00 |
| Flare of class C5.5 | 1162 | 15:48:00 | 15:55:00 | 15:59:00 |
| Flare of class C5.0 | 1158 | 14:57:00 | 15:05:00 | 15:09:00 |
| Flare of class C4.0 | 1158 | 14:27:00 | 14:32:00 | 14:35:00 |
| Flare of class M1.0 | 1162 | 14:00:00 | 14:08:00 | 14:15:00 |
| Flare of class M1.4 | 1158 | 12:59:00 | 13:03:00 | 13:06:00 |
| Flare of class C3.0 | 1162 | 12:16:00 | 12:20:00 | 12:24:00 |
| Flare of class M1.0 | 1162 | 10:23:00 | 10:26:00 | 10:37:00 |
| Flare of class M6.6 | 1158 | 09:55:00 | 10:11:00 | 10:15:00 |
| Flare of class C4.2 | 1162 | 09:03:00 | 09:11:00 | 09:19:00 |
| Flare of class C7.6 | 1162 | 07:13:00 | 07:24:00 | 07:38:00 |
| Flare of class C8.5 | 1158 | 06:27:00 | 06:33:00 | 06:39:00 |
| Flare of class C4.0 | 1161 | 04:44:00 | 04:51:00 | 05:01:00 |
| Flare of class C2.0 | 1161 | 03:20:00 | 03:34:00 | 03:40:00 |
| Flare of class C1.7 | 1158 | 01:02:00 | 01:08:00 | 01:14:00 |
Solar flares on Feb 17, 2011
12 solar flares were observed :
| Active region | Begin, UT | Max, UT | End, UT | |
|---|---|---|---|---|
| Flare of class C1.1 | 1158 | 21:30:00 | 21:35:00 | 21:40:00 |
| Flare of class C1.3 | 1158 | 15:49:00 | 15:54:00 | 16:04:00 |
| Flare of class C2.4 | 1158 | 12:33:00 | 12:36:00 | 12:39:00 |
| Flare of class C2.2 | 0 | 10:38:00 | 10:44:00 | 10:49:00 |
| Flare of class C2.6 | 1158 | 10:25:00 | 10:28:00 | 10:32:00 |
| Flare of class C1.9 | 1158 | 09:24:00 | 09:30:00 | 09:35:00 |
| Flare of class C1.2 | 1158 | 08:09:00 | 08:13:00 | 08:18:00 |
| Flare of class C1.2 | 1158 | 06:44:00 | 06:47:00 | 06:51:00 |
| Flare of class C1.0 | 1158 | 05:33:00 | 05:36:00 | 05:40:00 |
| Flare of class C1.5 | 1158 | 04:09:00 | 04:15:00 | 04:22:00 |
| Flare of class C2.3 | 1158 | 02:46:00 | 03:08:00 | 03:21:00 |
| Flare of class C6.1 | 1158 | 01:41:00 | 01:46:00 | 01:50:00 |