Solar flares on February 21, 2023
The most powerful solar flare in 24 hours
M5.0 (strong) flare - February 21 at 8:17 PM
Solar activity index
Value as of the end of the day on February 21, 2023
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 20, 2023 to February 21, 2023
Time zone — UTC+00 (London)
List of solar flares for February 21, 2023
The total number of solar flares of class C and higher — 11 flares
C class — 9 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.6 | 23:53 | 23:59 | 00:06 | 3234 |
| C8.3 | 21:43 | 21:51 | 21:59 | 3231 |
| C7.3 | 21:01 | 21:07 | 21:18 | 3234 |
| M5.0 | 19:57 | 20:17 | 20:30 | 3234 |
| C6.3 | 19:23 | 19:36 | 19:50 | 3234 |
| C4.0 | 18:26 | 18:38 | 18:47 | 3234 |
| C2.6 | 14:20 | 14:27 | 14:32 | 3226 |
| C6.1 | 12:17 | 12:21 | 12:25 | 3229 |
| M4.7 | 11:14 | 11:23 | 11:31 | 3234 |
| C9.6 | 04:35 | 04:44 | 04:52 | 3226 |
| C9.1 | 03:40 | 04:02 | 04:16 | — |