Solar flares — Dec 11, 2025
The strongest solar flare in the day
Flare of C9.7 level (normal) — in 15:46
Solar activity index
Value for Dec 11, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Dec 10, 2025 to Dec 11, 2025
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Dec 11, 2025
Total number of flares of class C and higher — 13 flares
C type — 13 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C2.41
|
23:37 | 23:45 | 23:52 | — |
|
C2.34
|
22:28 | 22:32 | 22:35 | — |
|
C1.8
|
21:35 | 21:46 | 21:53 | — |
|
C2.4
|
17:08 | 17:11 | 17:14 | 4294 |
|
C9.7
|
15:39 | 15:46 | 15:51 | 4294 |
|
C5.0
|
15:25 | 15:29 | 15:31 | 4294 |
|
C4.5
|
15:16 | 15:21 | 15:25 | 4294 |
|
C2.3
|
12:06 | 12:12 | 12:14 | 4299 |
|
C2.4
|
10:16 | 10:22 | 10:38 | 4294 |
|
C5.0
|
09:34 | 09:38 | 09:40 | 4299 |
|
C2.4
|
09:19 | 09:29 | 09:32 | 4294 |
|
C1.7
|
06:09 | 06:15 | 06:18 | — |
|
C2.0
|
02:48 | 02:51 | 02:55 | 4294 |