Solar flares — Sep 21, 2011
The strongest solar flare in the day
Flare of M1.8 level (strong) — in 13:23
Solar activity index
Value for Sep 21, 2011 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Sep 20, 2011 to Sep 21, 2011
Time zone — UTC+01 (London) - summer time
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Sep 21, 2011
Total number of flares of class C and higher — 10 flares
C type — 9 | M type — 1 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C2.0
|
21:31 | 21:36 | 21:40 | 1295 |
|
C2.1
|
17:47 | 17:49 | 17:51 | — |
|
C2.3
|
17:13 | 17:16 | 17:20 | — |
|
C2.8
|
16:21 | 16:26 | 16:30 | 1295 |
|
C2.7
|
15:37 | 15:38 | 15:41 | 1295 |
|
C2.6
|
15:21 | 15:23 | 15:26 | 1295 |
|
M1.8
|
13:04 | 13:23 | 13:45 | 1302 |
|
C3.9
|
12:17 | 12:24 | 12:28 | 1301 |
|
C1.9
|
08:37 | 08:41 | 08:47 | 1295 |
|
C2.7
|
01:55 | 02:07 | 02:14 | 1301 |