Solar flares — Sep 16, 2025
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The strongest solar flare in the day
Flare of C3.5 level (normal) — in 12:58
Solar activity index
Value for Sep 16, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Sep 15, 2025 to Sep 16, 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 16, 2025
Total number of flares of class C and higher — 5 flares
C type — 5 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C3.5
|
12:54 | 12:58 | 13:01 | 4220 |
|
C1.8
|
12:10 | 12:28 | 12:34 | 4223 |
|
C1.7
|
11:49 | 12:00 | 12:10 | 4223 |
|
C2.5
|
05:46 | 05:58 | 06:09 | 4217 |
|
C1.8
|
03:54 | 04:04 | 04:09 | 4217 |