Solar flares on July 18, 2026
The most powerful solar flare in 24 hours
C2.3 (normal) flare - July 18 at 4:05 AM
Solar activity index
Value as of the end of the day on July 18, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 17, 2026 to July 18, 2026
Time zone — UTC+00
List of solar flares for July 18, 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 |
|---|---|---|---|---|
| C1.5 | 21:39 | 21:52 | 22:03 | 4492 |
| C2.3 | 03:56 | 04:05 | 04:14 | 4489 |
| C2.2 | 00:38 | 01:20 | 02:08 | — |