Solar flares on November 4, 2025
The most powerful solar flare in 24 hours
X1.8 (very strong) flare - November 4 at 5:34 PM
Solar activity index
Value as of the end of the day on November 4, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from November 3, 2025 to November 4, 2025
Time zone — UTC+00
List of solar flares for November 4, 2025
The total number of solar flares of class C and higher — 14 flares
C class — 10 | M class — 2 | X class — 2
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.7 | 22:33 | 22:44 | 22:56 | 4272 |
| X1.1 | 21:45 | 22:01 | 22:11 | 4276 |
| C9.3 | 20:09 | 20:19 | 20:26 | 4274 |
| X1.8 | 17:15 | 17:34 | 17:51 | 4274 |
| C2.0 | 14:16 | 14:21 | 14:27 | 4274 |
| C2.9 | 11:51 | 12:01 | 12:07 | 4274 |
| C2.4 | 11:41 | 11:48 | 11:51 | 4274 |
| C1.9 | 11:09 | 11:14 | 11:28 | 4273 |
| C4.6 | 10:02 | 10:13 | 10:17 | — |
| C2.6 | 08:54 | 09:02 | 09:05 | 4275 |
| C2.1 | 06:11 | 06:19 | 06:39 | — |
| C3.4 | 05:25 | 05:28 | 05:32 | 4274 |
| M3.5 | 01:31 | 01:48 | 02:04 | 4274 |
| C8.7 | 23:37 | 00:08 | 00:33 | 4272 |