Solar flares on January 18, 2026
The most powerful solar flare in 24 hours
X1.9 (very strong) flare - January 18 at 6:09 PM
Solar activity index
Value as of the end of the day on January 18, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 17, 2026 to January 18, 2026
Time zone — UTC+00
List of solar flares for January 18, 2026
The total number of solar flares of class C and higher — 8 flares
C class — 7 | M class — 0 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| X1.9 | 17:27 | 18:09 | 18:51 | 4341 |
| C2.5 | 16:31 | 16:37 | 16:43 | 4341 |
| C2.3 | 13:59 | 14:04 | 14:10 | — |
| C2.2 | 11:42 | 11:48 | 11:55 | — |
| C7.1 | 06:01 | 06:20 | 06:32 | 4341 |
| C2.7 | 03:53 | 04:08 | 04:22 | — |
| C1.7 | 03:41 | 03:49 | 03:53 | 4342 |
| C1.5 | 03:06 | 03:11 | 03:17 | 4342 |