Solar flares — Apr 21, 2025
The strongest solar flare in the day
Flare of M1.9 level (strong) — in 18:37
Solar activity index
Value for Apr 21, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Apr 20, 2025 to Apr 21, 2025
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Apr 21, 2025
Total number of flares of class C and higher — 3 flares
C type — 2 | M type — 1 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
M1.9
|
18:24 | 18:37 | 18:41 | 4062 |
|
C2.1
|
06:31 | 06:42 | 06:51 | 4063 |
|
C3.9
|
00:10 | 00:31 | 00:54 | 4064 |