Solar flares on February 17, 2026
The most powerful solar flare in 24 hours
C1.8 (normal) flare - February 17 at 11:23 PM
Solar activity index
Value as of the end of the day on February 17, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 16, 2026 to February 17, 2026
Time zone — UTC+00
List of solar flares for February 17, 2026
The total number of solar flares of class C and higher — 3 flares
C class — 3 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.8 | 23:07 | 23:23 | 23:31 | 4374 |
| C1.1 | 18:37 | 18:48 | 18:58 | — |
| C1.0 | 04:41 | 04:52 | 05:02 | — |