Solar flares on July 18, 2025
The most powerful solar flare in 24 hours
C3.5 (normal) flare - July 18 at 4:13 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-04 (Thunder bay) — summer time
List of solar flares for July 18, 2025
The total number of solar flares of class C and higher — 6 flares
C class — 6 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.1 | 12:25 | 12:39 | 12:59 | 4136 |
| C2.4 | 08:58 | 09:09 | 09:15 | 4136 |
| C2.1 | 08:42 | 08:51 | 08:58 | 4136 |
| C2.2 | 04:56 | 05:11 | 05:28 | 4136 |
| C3.5 | 04:05 | 04:13 | 04:17 | 4136 |
| C2.2 | 03:00 | 03:14 | 03:23 | 4136 |