Solar flares — Sep 15, 2025
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The strongest solar flare in the day
Flare of C2.1 level (normal) — in 10:55
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 — 4 flares
C type — 4 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
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 |