Solar flares on February 21, 2024
The most powerful solar flare in 24 hours
X1.8 (very strong) flare - February 21 at 11:07 PM
Solar activity index
Value as of the end of the day on February 21, 2024
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 20, 2024 to February 21, 2024
Time zone — UTC+00
List of solar flares for February 21, 2024
The total number of solar flares of class C and higher — 16 flares
C class — 15 | M class — 0 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| X1.8 | 22:52 | 23:07 | 23:14 | 3590 |
| C4.3 | 22:38 | 22:42 | 22:46 | — |
| C3.7 | 22:21 | 22:31 | 22:38 | 3590 |
| C4.0 | 20:32 | 20:37 | 20:41 | 3590 |
| C3.3 | 19:22 | 19:29 | 19:33 | 3590 |
| C3.4 | 18:14 | 18:25 | 18:32 | 3590 |
| C4.1 | 15:39 | 16:02 | 16:42 | — |
| C1.9 | 14:14 | 14:21 | 14:25 | — |
| C2.1 | 13:41 | 13:52 | 14:03 | — |
| C1.4 | 13:09 | 13:15 | 13:19 | 3590 |
| C1.7 | 10:22 | 10:27 | 10:32 | 3590 |
| C1.7 | 07:31 | 07:35 | 07:39 | 3590 |
| C2.4 | 03:38 | 04:04 | 04:35 | — |
| C4.3 | 01:55 | 02:17 | 02:42 | — |
| C3.0 | 00:44 | 00:58 | 01:16 | 3583 |
| C2.4 | 00:32 | 00:37 | 00:41 | 3590 |