Solar flares — Feb 21, 2011
The strongest solar flare in the day
Flare of C7.8 level (normal) — in 10:12
Solar activity index
Value for Feb 21, 2011 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Feb 20, 2011 to Feb 21, 2011
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Feb 21, 2011
Total number of flares of class C and higher — 11 flares
C type — 10 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C1.4
|
18:25 | 18:35 | 18:47 | 1161 |
|
C1.5
|
15:39 | 15:44 | 15:55 | 1158 |
|
C7.8
|
10:08 | 10:12 | 10:15 | 1158 |
|
C1.8
|
10:00 | 10:04 | 10:07 | 1158 |
|
C2.7
|
09:01 | 09:06 | 09:09 | 1158 |
|
C4.3
|
06:02 | 06:10 | 06:14 | — |
|
C4.1
|
05:00 | 05:06 | 05:08 | 1158 |
|
C1.5
|
04:04 | 04:10 | 04:13 | 1158 |
|
C1.8
|
03:10 | 03:15 | 03:18 | 1158 |
|
C4.6
|
02:13 | 02:24 | 02:27 | 1158 |
|
B8.8
|
01:41 | 01:46 | 01:50 | 1161 |