Solar flares on May 21, 2023
The most powerful solar flare in 24 hours
M2.6 (strong) flare - May 21 at 4:04 PM
Solar activity index
Value as of the end of the day on May 21, 2023
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 20, 2023 to May 21, 2023
Time zone — UTC+00
List of solar flares for May 21, 2023
The total number of solar flares of class C and higher — 13 flares
C class — 11 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C9.8 | 21:36 | 21:57 | 22:13 | 3305 |
| C4.3 | 20:55 | 21:01 | 21:16 | 3305 |
| M2.6 | 15:49 | 16:04 | 16:18 | 3311 |
| C4.6 | 15:04 | 15:17 | 15:29 | 3305 |
| C5.4 | 11:20 | 11:30 | 11:45 | 3305 |
| C4.9 | 08:27 | 08:34 | 08:48 | 3311 |
| C4.5 | 07:40 | 07:59 | 08:12 | 3305 |
| C4.1 | 06:40 | 06:49 | 06:53 | 3305 |
| C3.0 | 05:30 | 05:40 | 06:04 | 3311 |
| C3.0 | 04:57 | 05:03 | 05:08 | 3311 |
| C4.9 | 03:51 | 03:57 | 04:05 | 3311 |
| M1.4 | 02:18 | 02:23 | 02:33 | 3311 |
| C2.5 | 00:59 | 01:06 | 01:14 | 3305 |