Solar flares on May 21, 2023
The most powerful solar flare in 24 hours
M2.6 (strong) flare - May 21 at 9:04 AM
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-07 (Phoenix)
List of solar flares for May 21, 2023
The total number of solar flares of class C and higher — 12 flares
C class — 11 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.9 | 23:06 | 23:12 | 23:17 | 3305 |
| C4.1 | 21:50 | 21:57 | 22:02 | 3311 |
| C3.7 | 20:30 | 20:41 | 20:50 | 3311 |
| C3.5 | 19:17 | 19:26 | 19:34 | 3305 |
| C8.2 | 17:55 | 18:08 | 18:18 | 3311 |
| C9.8 | 14:36 | 14:57 | 15:13 | 3305 |
| C4.3 | 13:55 | 14:01 | 14:16 | 3305 |
| M2.6 | 08:49 | 09:04 | 09:18 | 3311 |
| C4.6 | 08:04 | 08:17 | 08:29 | 3305 |
| C5.4 | 04:20 | 04:30 | 04:45 | 3305 |
| C4.9 | 01:27 | 01:34 | 01:48 | 3311 |
| C4.5 | 00:40 | 00:59 | 01:12 | 3305 |