Solar flares on May 15, 2025
The most powerful solar flare in 24 hours
M2.1 (strong) flare - May 15 at 9:21 AM
Solar activity index
Value as of the end of the day on May 15, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 14, 2025 to May 15, 2025
Time zone — UTC-08 (Anchorage) — summer time
List of solar flares for May 15, 2025
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 |
|---|---|---|---|---|
| C1.0 | 21:27 | 21:39 | 21:47 | 4087 |
| C2.3 | 19:48 | 20:03 | 20:15 | 4089 |
| C1.7 | 19:10 | 19:15 | 19:29 | 4087 |
| C3.4 | 16:44 | 16:52 | 16:55 | 4087 |
| C9.6 | 14:11 | 14:19 | 14:21 | 4087 |
| C1.2 | 13:27 | 13:36 | 13:40 | 4087 |
| C1.1 | 11:47 | 11:53 | 11:59 | — |
| M2.1 | 09:08 | 09:21 | 09:27 | 4087 |
| C3.6 | 07:17 | 07:27 | 07:37 | 4087 |
| C1.2 | 06:54 | 06:58 | 07:00 | 4087 |
| C1.2 | 06:38 | 06:44 | 06:54 | 4087 |
| C1.0 | 05:32 | 05:39 | 05:47 | 4087 |