Solar flares on May 18, 2023
The most powerful solar flare in 24 hours
M4.5 (strong) flare - May 18 at 9:05 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+00 (Reykjavik)
List of solar flares for May 18, 2023
The total number of solar flares of class C and higher — 13 flares
C class — 6 | M class — 7 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M4.5 | 20:51 | 21:05 | 21:16 | 3311 |
| M3.8 | 20:12 | 20:23 | 20:51 | 3311 |
| M1.1 | 17:32 | 17:51 | 18:01 | 3311 |
| C4.0 | 15:43 | 15:55 | 16:03 | 3311 |
| M1.6 | 12:39 | 12:49 | 12:56 | 3311 |
| M2.2 | 11:32 | 11:47 | 12:00 | 3311 |
| C4.2 | 10:55 | 11:05 | 11:19 | 3311 |
| C5.2 | 09:47 | 10:11 | 10:13 | 3311 |
| M1.2 | 06:48 | 06:55 | 07:02 | 3311 |
| M1.0 | 06:13 | 06:26 | 06:38 | 3311 |
| C2.2 | 04:51 | 04:57 | 05:01 | — |
| C3.8 | 04:07 | 04:12 | 04:16 | — |
| C8.6 | 03:03 | 03:21 | 03:39 | — |