Solar flares — Sep 11, 2025
The strongest solar flare in the day
Flare of C7.6 level (normal) — in 16:21
Solar activity index
Value for Sep 11, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Sep 10, 2025 to Sep 11, 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 11, 2025
Total number of flares of class C and higher — 8 flares
C type — 8 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C1.0
|
23:16 | 23:29 | 23:53 | 4216 |
|
C1.8
|
20:37 | 20:48 | 21:03 | 4216 |
|
C1.0
|
20:16 | 20:24 | 20:28 | 4213 |
|
C1.2
|
19:58 | 20:03 | 20:07 | 4207 |
|
C1.9
|
18:03 | 18:07 | 18:10 | 4207 |
|
C7.6
|
16:09 | 16:21 | 16:33 | 4207 |
|
C1.0
|
05:04 | 05:09 | 05:11 | 4207 |
|
C1.1
|
04:17 | 04:27 | 05:04 | 4207 |