Solar flares — Sep 13, 2025
The strongest solar flare in the day
Flare of C1.5 level (normal) — in 09:14
Solar activity index
Value for Sep 13, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Sep 12, 2025 to Sep 13, 2025
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 13, 2025
Total number of flares of class C and higher — 7 flares
C type — 7 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C1.1
|
23:32 | 23:43 | 00:15 | 4211 |
|
C1.2
|
22:47 | 23:06 | 23:23 | — |
|
C1.2
|
19:57 | 20:05 | 20:12 | — |
|
C1.5
|
08:33 | 09:14 | 09:44 | 4207 |
|
C1.1
|
06:03 | 06:09 | 06:19 | 4207 |
|
C1.1
|
00:38 | 00:44 | 01:17 | 4213 |
|
C1.4
|
23:49 | 00:00 | 00:12 | 4207 |