Solar flares on May 18, 2023
The most powerful solar flare in 24 hours
M5.3 (strong) flare - May 18 at 6:48 PM
Solar activity index
Value as of the end of the day on May 18, 2023
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 17, 2023 to May 18, 2023
Time zone — UTC-06 (Boise) — summer time
List of solar flares for May 18, 2023
The total number of solar flares of class C and higher — 16 flares
C class — 6 | M class — 10 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M2.5 | 22:49 | 23:00 | 23:10 | 3311 |
| C2.9 | 22:37 | 22:45 | 22:49 | 3311 |
| M1.6 | 21:05 | 21:12 | 21:23 | 3311 |
| C6.9 | 20:48 | 20:58 | 21:05 | 3311 |
| M5.3 | 18:41 | 18:48 | 18:54 | 3311 |
| C5.1 | 18:05 | 18:15 | 18:24 | 3310 |
| M4.5 | 14:51 | 15:05 | 15:16 | 3311 |
| M3.8 | 14:12 | 14:23 | 14:51 | 3311 |
| M1.1 | 11:32 | 11:51 | 12:01 | 3311 |
| C4.0 | 09:43 | 09:55 | 10:03 | 3311 |
| M1.6 | 06:39 | 06:49 | 06:56 | 3311 |
| M2.2 | 05:32 | 05:47 | 06:00 | 3311 |
| C4.2 | 04:55 | 05:05 | 05:19 | 3311 |
| C5.2 | 03:47 | 04:11 | 04:13 | 3311 |
| M1.2 | 00:48 | 00:55 | 01:02 | 3311 |
| M1.0 | 00:13 | 00:26 | 00:38 | 3311 |