Solar flares — Oct 04, 2025
The strongest solar flare in the day
Flare of C5.5 level (normal) — in 02:42
Solar activity index
Value for Oct 04, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Oct 03, 2025 to Oct 04, 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 Oct 04, 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 | |
|---|---|---|---|---|
|
C3.0
|
19:50 | 20:05 | 20:11 | — |
|
C2.7
|
19:37 | 19:45 | 19:50 | — |
|
C3.5
|
18:45 | 18:52 | 18:56 | 4241 |
|
C3.5
|
05:55 | 06:02 | 06:09 | 4232 |
|
C3.2
|
05:07 | 05:14 | 05:16 | 4242 |
|
C4.7
|
04:10 | 04:22 | 04:31 | 4236 |
|
C5.5
|
02:36 | 02:42 | 02:47 | 4242 |
|
C2.7
|
01:49 | 01:54 | 01:58 | 4242 |
|
C3.4
|
01:25 | 01:35 | 01:41 | 4242 |