Solar flares — Dec 18, 2025
The strongest solar flare in the day
Flare of C3.2 level (normal) — in 07:50
Solar activity index
Value for Dec 18, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Dec 17, 2025 to Dec 18, 2025
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Dec 18, 2025
Total number of flares of class C and higher — 3 flares
C type — 3 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C3.2
|
07:44 | 07:50 | 07:56 | 4312 |
|
C1.7
|
03:05 | 03:15 | 03:31 | 4308 |
|
C1.3
|
00:02 | 00:11 | 00:14 | 4307 |