Solar flares on October 19, 2025
The most powerful solar flare in 24 hours
M1.8 (strong) flare - October 19 at 12:15 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-08 (Anchorage) — summer time
List of solar flares for October 19, 2025
The total number of solar flares of class C and higher — 10 flares
C class — 8 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.5 | 23:39 | 23:48 | 00:20 | 4248 |
| M1.0 | 21:10 | 21:27 | 21:38 | 4248 |
| C5.9 | 18:24 | 18:34 | 18:47 | 4246 |
| C3.0 | 14:44 | 14:52 | 15:06 | — |
| M1.8 | 12:03 | 12:15 | 12:26 | 4246 |
| C3.7 | 10:15 | 10:22 | 10:27 | 4246 |
| C2.4 | 08:08 | 08:13 | 08:19 | 4246 |
| C2.9 | 05:34 | 05:42 | 05:46 | 4246 |
| C2.6 | 04:26 | 04:42 | 05:04 | 4256 |
| C4.7 | 23:49 | 00:02 | 00:15 | 4246 |