Solar flares on January 18, 2026
The most powerful solar flare in 24 hours
X1.9 (very strong) flare - January 18 at 11:39 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+05:30 (Aligarh)
List of solar flares for January 18, 2026
The total number of solar flares of class C and higher — 10 flares
C class — 8 | M class — 1 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| X1.9 | 22:57 | 23:39 | 00:21 | 4341 |
| C2.5 | 22:01 | 22:07 | 22:13 | 4341 |
| C2.3 | 19:29 | 19:34 | 19:40 | — |
| C2.2 | 17:12 | 17:18 | 17:25 | — |
| C7.1 | 11:31 | 11:50 | 12:02 | 4341 |
| C2.7 | 09:23 | 09:38 | 09:52 | — |
| C1.7 | 09:11 | 09:19 | 09:23 | 4342 |
| C1.5 | 08:36 | 08:41 | 08:47 | 4342 |
| M1.1 | 05:16 | 05:21 | 05:24 | 4341 |
| C8.4 | 05:02 | 05:12 | 05:16 | 4341 |