Solar flares on May 13, 2025
The most powerful solar flare in 24 hours
X1.2 (very strong) flare - May 13 at 10:38 AM
Solar activity index
Value as of the end of the day on May 13, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 12, 2025 to May 13, 2025
Time zone — UTC-05 (Chicago) — summer time
List of solar flares for May 13, 2025
The total number of solar flares of class C and higher — 6 flares
C class — 4 | M class — 1 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| M5.3 | 22:05 | 22:25 | 22:35 | 4087 |
| C2.1 | 21:08 | 21:15 | 21:21 | 4087 |
| C1.2 | 20:45 | 20:57 | 21:08 | 4087 |
| C2.3 | 17:34 | 17:41 | 17:53 | 4085 |
| X1.2 | 10:25 | 10:38 | 10:44 | 4086 |
| C3.7 | 08:49 | 08:57 | 09:00 | 4085 |