Solar flares on August 23, 2025
The most powerful solar flare in 24 hours
M1.9 (strong) flare - August 23 at 4:06 PM
Solar activity index
Value as of the end of the day on August 23, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 22, 2025 to August 23, 2025
Time zone — UTC-04 (Thunder bay) — summer time
List of solar flares for August 23, 2025
The total number of solar flares of class C and higher — 11 flares
C class — 10 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.8 | 20:50 | 20:54 | 21:00 | 4191 |
| C6.2 | 19:04 | 19:19 | 19:27 | — |
| C5.5 | 18:41 | 18:56 | 19:04 | — |
| M1.9 | 15:53 | 16:06 | 16:16 | — |
| C9.1 | 15:01 | 15:22 | 15:40 | 4191 |
| C2.6 | 11:12 | 11:16 | 11:19 | — |
| C3.0 | 10:48 | 10:54 | 11:01 | — |
| C3.2 | 09:19 | 09:32 | 09:50 | 4191 |
| C1.9 | 08:47 | 08:52 | 08:56 | 4191 |
| C2.3 | 07:29 | 07:35 | 07:40 | — |
| C2.8 | 02:23 | 02:29 | 02:34 | 4191 |