Solar flares — Sep 04, 2025
The strongest solar flare in the day
Flare of M1.0 level (strong) — in 14:44
Solar activity index
Value for Sep 04, 2025 24:00 (end on the day). The maximum value is 10.0

Solar flares in 2 days
Chart of solar activity from Sep 03, 2025 to Sep 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 Sep 04, 2025
Total number of flares of class C and higher — 7 flares
C type — 6 | M type — 1 | X type — 0
start | maximum | end | region | |
---|---|---|---|---|
C2.9
|
22:34 | 22:44 | 22:53 | 4197 |
M1.0
|
14:36 | 14:44 | 14:49 | 4207 |
C2.5
|
14:19 | 14:26 | 14:36 | 4207 |
C2.8
|
11:48 | 11:55 | 11:59 | 4207 |
C2.1
|
10:15 | 10:24 | 10:32 | 4199 |
C9.2
|
06:22 | 06:32 | 06:37 | 4207 |
C2.5
|
01:30 | 01:37 | 01:47 | 4199 |