Solar flares on August 17, 2025
The most powerful solar flare in 24 hours
C3.6 (normal) flare - August 17 at 4:59 AM
Solar activity index
Value as of the end of the day on August 17, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 16, 2025 to August 17, 2025
Time zone — UTC+00
List of solar flares for August 17, 2025
The total number of solar flares of class C and higher — 9 flares
C class — 9 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.3 | 19:48 | 19:58 | 20:02 | 4180 |
| C1.0 | 08:01 | 08:06 | 08:09 | 4172 |
| C1.4 | 07:36 | 07:41 | 07:44 | 4172 |
| C1.7 | 06:49 | 07:05 | 07:16 | 4172 |
| C1.0 | 05:55 | 06:05 | 06:11 | 4172 |
| C3.6 | 04:51 | 04:59 | 05:05 | 4172 |
| C1.8 | 04:01 | 04:11 | 04:16 | 4180 |
| C2.0 | 03:10 | 03:15 | 03:20 | 4172 |
| C1.6 | 01:11 | 01:26 | 01:44 | 4172 |