Solar flares — Apr 21, 2002
The strongest solar flare in the day
Flare of X1.5 level (very strong) — in 02:51
Solar activity index
Value for Apr 21, 2002 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Apr 20, 2002 to Apr 21, 2002
Time zone — UTC+01 (London) - summer time
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Apr 21, 2002
Total number of flares of class C and higher — 6 flares
C type — 5 | M type — 0 | X type — 1
| start | maximum | end | region | |
|---|---|---|---|---|
|
C3.4
|
22:51 | 22:56 | 22:58 | — |
|
C2.9
|
21:11 | 21:16 | 21:18 | — |
|
C8.3
|
18:37 | 19:06 | 19:24 | — |
|
C7.9
|
18:25 | 18:30 | 18:33 | — |
|
X1.5
|
01:43 | 02:51 | 03:38 | 9906 |
|
C1.9
|
00:23 | 00:26 | 00:28 | — |