Solar flares on July 18, 2025
The most powerful solar flare in 24 hours
C3.5 (normal) flare - July 18 at 9:13 AM
Solar activity index
Value as of the end of the day on July 18, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 17, 2025 to July 18, 2025
Time zone — UTC+01 (London) — summer time
List of solar flares for July 18, 2025
The total number of solar flares of class C and higher — 7 flares
C class — 7 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.1 | 17:25 | 17:39 | 17:59 | 4136 |
| C2.4 | 13:58 | 14:09 | 14:15 | 4136 |
| C2.1 | 13:42 | 13:51 | 13:58 | 4136 |
| C2.2 | 09:56 | 10:11 | 10:28 | 4136 |
| C3.5 | 09:05 | 09:13 | 09:17 | 4136 |
| C2.2 | 08:00 | 08:14 | 08:23 | 4136 |
| C2.2 | 04:35 | 04:42 | 04:48 | 4136 |