Solar flares on September 19, 2025
The most powerful solar flare in 24 hours
M1.5 (strong) flare - September 19 at 1:41 PM
Solar activity index
Value as of the end of the day on September 19, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 18, 2025 to September 19, 2025
Time zone — UTC-08 (Anchorage) — summer time
List of solar flares for September 19, 2025
The total number of solar flares of class C and higher — 6 flares
C class — 5 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.5 | 23:02 | 23:08 | 23:18 | 4216 |
| C2.6 | 20:34 | 20:52 | 21:21 | 4219 |
| M1.5 | 13:22 | 13:41 | 13:56 | 4216 |
| C5.8 | 12:49 | 13:12 | 13:20 | 4216 |
| C1.9 | 08:37 | 08:44 | 08:52 | 4223 |
| C1.9 | 04:49 | 04:58 | 05:06 | 4219 |