Solar flares on February 4, 2026
The most powerful solar flare in 24 hours
X4.2 (very strong) flare - February 4 at 12:13 PM
Solar activity index
Value as of the end of the day on February 4, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 3, 2026 to February 4, 2026
Time zone — UTC+00
List of solar flares for February 4, 2026
The total number of solar flares of class C and higher — 16 flares
C class — 7 | M class — 8 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.0 | 21:42 | 21:47 | 21:54 | 4366 |
| C6.6 | 20:19 | 20:33 | 20:40 | 4371 |
| M1.8 | 15:25 | 15:34 | 15:55 | 4366 |
| X4.2 | 12:02 | 12:13 | 12:18 | — |
| M1.1 | 11:31 | 11:35 | 11:41 | 4366 |
| M1.5 | 10:51 | 10:55 | 10:58 | 4366 |
| C6.2 | 09:48 | 09:59 | 10:10 | 4366 |
| M1.8 | 09:12 | 09:20 | 09:23 | 4366 |
| C6.7 | 08:50 | 09:02 | 09:11 | 4366 |
| C3.7 | 08:26 | 08:38 | 08:41 | 4366 |
| C3.5 | 06:50 | 06:55 | 07:01 | — |
| C4.5 | 06:15 | 06:23 | 06:35 | — |
| M2.1 | 03:48 | 03:55 | 04:02 | 4366 |
| M4.9 | 02:32 | 02:39 | 02:55 | 4366 |
| M1.4 | 01:26 | 01:39 | 01:45 | 4366 |
| M1.2 | 01:02 | 01:10 | 01:16 | 4366 |