Solar flares — Oct 31, 2025
The strongest solar flare in the day
Flare of C7.1 level (normal) — in 20:43
Solar activity index
Value for Oct 31, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Oct 30, 2025 to Oct 31, 2025
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Oct 31, 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 | |
|---|---|---|---|---|
|
C7.1
|
19:37 | 20:43 | 21:40 | — |
|
C3.7
|
16:39 | 16:53 | 17:23 | — |
|
C1.1
|
08:25 | 08:38 | 08:56 | — |
|
C1.8
|
01:44 | 02:01 | 02:30 | — |