Solar flares on November 4, 2025
The most powerful solar flare in 24 hours
X1.8 (very strong) flare - November 4 at 12:34 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-05 (Quebec)
List of solar flares for November 4, 2025
The total number of solar flares of class C and higher — 15 flares
C class — 12 | M class — 1 | X class — 2
| Class | begin | max | end | region |
|---|---|---|---|---|
| C8.0 | 21:52 | 22:01 | 22:06 | 4274 |
| C6.2 | 20:47 | 20:55 | 21:01 | 4274 |
| C4.3 | 19:55 | 19:58 | 20:03 | 4274 |
| M1.7 | 17:33 | 17:44 | 17:56 | 4272 |
| X1.1 | 16:45 | 17:01 | 17:11 | 4276 |
| C9.3 | 15:09 | 15:19 | 15:26 | 4274 |
| X1.8 | 12:15 | 12:34 | 12:51 | 4274 |
| C2.0 | 09:16 | 09:21 | 09:27 | 4274 |
| C2.9 | 06:51 | 07:01 | 07:07 | 4274 |
| C2.4 | 06:41 | 06:48 | 06:51 | 4274 |
| C1.9 | 06:09 | 06:14 | 06:28 | 4273 |
| C4.6 | 05:02 | 05:13 | 05:17 | — |
| C2.6 | 03:54 | 04:02 | 04:05 | 4275 |
| C2.1 | 01:11 | 01:19 | 01:39 | — |
| C3.4 | 00:25 | 00:28 | 00:32 | 4274 |