Solar flares on February 4, 2026
The most powerful solar flare in 24 hours
X4.2 (very strong) flare - February 4 at 5:13 AM
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-07 (Phoenix)
List of solar flares for February 4, 2026
The total number of solar flares of class C and higher — 17 flares
C class — 9 | M class — 7 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.3 | 23:13 | 23:19 | 23:27 | 4366 |
| M2.7 | 21:25 | 21:36 | 21:41 | 4366 |
| M2.5 | 20:55 | 21:21 | 21:25 | 4366 |
| C8.9 | 19:40 | 19:54 | 20:06 | 4366 |
| C3.2 | 19:13 | 19:22 | 19:32 | 4366 |
| C4.9 | 18:44 | 18:51 | 18:57 | 4366 |
| C4.7 | 17:54 | 18:01 | 18:06 | 4371 |
| C3.0 | 14:42 | 14:47 | 14:54 | 4366 |
| C6.6 | 13:19 | 13:33 | 13:40 | 4371 |
| M1.8 | 08:25 | 08:34 | 08:55 | 4366 |
| X4.2 | 05:02 | 05:13 | 05:18 | — |
| M1.1 | 04:31 | 04:35 | 04:41 | 4366 |
| M1.5 | 03:51 | 03:55 | 03:58 | 4366 |
| C6.2 | 02:48 | 02:59 | 03:10 | 4366 |
| M1.8 | 02:12 | 02:20 | 02:23 | 4366 |
| C6.7 | 01:50 | 02:02 | 02:11 | 4366 |
| C3.7 | 01:26 | 01:38 | 01:41 | 4366 |