Solar flares on October 19, 2025
The most powerful solar flare in 24 hours
M1.8 (strong) flare - October 19 at 9:15 PM
Solar activity index
Value as of the end of the day on October 19, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 18, 2025 to October 19, 2025
Time zone — UTC+01 (London) — summer time
List of solar flares for October 19, 2025
The total number of solar flares of class C and higher — 9 flares
C class — 7 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.0 | 23:44 | 23:52 | 00:06 | — |
| M1.8 | 21:03 | 21:15 | 21:26 | 4246 |
| C3.7 | 19:15 | 19:22 | 19:27 | 4246 |
| C2.4 | 17:08 | 17:13 | 17:19 | 4246 |
| C2.9 | 14:34 | 14:42 | 14:46 | 4246 |
| C2.6 | 13:26 | 13:42 | 14:04 | 4256 |
| C4.7 | 08:49 | 09:02 | 09:15 | 4246 |
| C2.8 | 05:28 | 05:34 | 05:39 | 4246 |
| M1.0 | 02:46 | 02:56 | 03:04 | 4246 |