Solar flares on May 17, 2026
The most powerful solar flare in 24 hours
M1.4 (strong) flare - May 17 at 8:39 AM
Solar activity index
Value as of the end of the day on May 17, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 16, 2026 to May 17, 2026
Time zone — UTC+05 (Perm)
List of solar flares for May 17, 2026
The total number of solar flares of class C and higher — 10 flares
C class — 9 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.1 | 17:25 | 17:38 | 17:57 | 4438 |
| C1.0 | 17:01 | 17:07 | 17:10 | 4439 |
| C1.1 | 16:23 | 16:32 | 16:40 | 4436 |
| C2.0 | 10:21 | 10:32 | 10:37 | — |
| C1.0 | 09:36 | 09:44 | 09:52 | — |
| M1.4 | 08:29 | 08:39 | 08:42 | 4435 |
| C5.8 | 04:13 | 04:30 | 04:38 | 4435 |
| C1.4 | 03:22 | 03:26 | 03:30 | 4439 |
| C3.5 | 00:57 | 01:03 | 01:09 | 4435 |
| C2.5 | 00:02 | 00:07 | 00:11 | 4435 |