Solar flares — Aug 13, 2025
The strongest solar flare in the day
Flare of C4.1 level (normal) — in 21:03
Solar activity index
Value for Aug 13, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Aug 12, 2025 to Aug 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 Aug 13, 2025
Total number of flares of class C and higher — 12 flares
C type — 12 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C4.1
|
20:57 | 21:03 | 21:05 | 4172 |
|
C3.2
|
19:11 | 19:19 | 19:25 | 4172 |
|
C1.8
|
18:55 | 19:01 | 19:04 | 4172 |
|
C1.5
|
16:58 | 17:01 | 17:04 | — |
|
C1.7
|
16:38 | 16:42 | 16:58 | — |
|
C2.6
|
15:46 | 15:56 | 15:59 | 4172 |
|
C1.8
|
15:28 | 15:35 | 15:46 | — |
|
C1.8
|
11:30 | 11:39 | 11:43 | 4180 |
|
C1.7
|
11:17 | 11:21 | 11:30 | 4172 |
|
C2.1
|
05:26 | 05:35 | 05:39 | 4178 |
|
C2.3
|
04:23 | 04:30 | 04:32 | 4178 |
|
C2.9
|
02:29 | 02:42 | 02:44 | 4178 |