Solar flares on October 19, 2025
The most powerful solar flare in 24 hours
M1.8 (strong) flare - October 19 at 4:15 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-04 (Jacksonville) — 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 — 8 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C5.9 | 22:24 | 22:34 | 22:47 | 4246 |
| C3.0 | 18:44 | 18:52 | 19:06 | — |
| M1.8 | 16:03 | 16:15 | 16:26 | 4246 |
| C3.7 | 14:15 | 14:22 | 14:27 | 4246 |
| C2.4 | 12:08 | 12:13 | 12:19 | 4246 |
| C2.9 | 09:34 | 09:42 | 09:46 | 4246 |
| C2.6 | 08:26 | 08:42 | 09:04 | 4256 |
| C4.7 | 03:49 | 04:02 | 04:15 | 4246 |
| C2.8 | 00:28 | 00:34 | 00:39 | 4246 |