Solar flares — Apr 21, 2011
The strongest solar flare in the day
Flare of C8.5 level (normal) — in 09:48
Solar activity index
Value for Apr 21, 2011 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Apr 20, 2011 to Apr 21, 2011
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Apr 21, 2011
Total number of flares of class C and higher — 5 flares
C type — 4 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C4.5
|
21:51 | 22:07 | 22:39 | 1195 |
|
C4.9
|
14:37 | 14:51 | 15:00 | 1195 |
|
C8.5
|
09:38 | 09:48 | 09:58 | 1195 |
|
C1.0
|
08:31 | 08:38 | 08:50 | 1195 |
|
B8.3
|
06:24 | 06:39 | 06:44 | 1195 |