Solar flares — Sep 15, 2025
The strongest solar flare in the day
Flare of C3.5 level (normal) — in 19:31
Solar activity index
Value for Sep 15, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Sep 14, 2025 to Sep 15, 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 15, 2025
Total number of flares of class C and higher — 9 flares
C type — 9 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C1.4
|
22:04 | 22:08 | 22:10 | 4217 |
|
C1.3
|
21:54 | 22:01 | 22:04 | 4217 |
|
C3.5
|
19:23 | 19:31 | 19:46 | 4213 |
|
C1.6
|
14:10 | 14:17 | 14:22 | 4213 |
|
C1.4
|
12:32 | 12:39 | 12:45 | 4213 |
|
C2.1
|
10:52 | 10:55 | 11:00 | 4216 |
|
C2.1
|
09:14 | 09:21 | 09:28 | 4217 |
|
C1.6
|
08:02 | 08:09 | 08:21 | 4217 |
|
C1.7
|
02:30 | 02:38 | 02:48 | 4217 |