Solar flares on January 17, 2026
The most powerful solar flare in 24 hours
M2.1 (strong) flare - January 17 at 4:29 AM
Solar activity index
Value as of the end of the day on January 17, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 16, 2026 to January 17, 2026
Time zone — UTC-06 (San Antonio)
List of solar flares for January 17, 2026
The total number of solar flares of class C and higher — 11 flares
C class — 9 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.7 | 21:53 | 22:08 | 22:22 | — |
| C1.7 | 21:41 | 21:49 | 21:53 | 4342 |
| C1.5 | 21:06 | 21:11 | 21:17 | 4342 |
| M1.1 | 17:46 | 17:51 | 17:54 | 4341 |
| C8.4 | 17:32 | 17:42 | 17:46 | 4341 |
| C1.9 | 12:04 | 12:13 | 12:22 | 4342 |
| C5.6 | 09:03 | 09:07 | 09:10 | 4341 |
| M2.1 | 04:19 | 04:29 | 04:32 | 4341 |
| C2.0 | 01:43 | 01:48 | 01:50 | 4343 |
| C2.2 | 01:29 | 01:34 | 01:43 | 4343 |
| C2.8 | 00:03 | 00:09 | 00:14 | 4342 |