Solar flares on October 16, 2025
The most powerful solar flare in 24 hours
M2.7 (strong) flare - October 16 at 1:28 AM
Solar activity index
Value as of the end of the day on October 16, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 15, 2025 to October 16, 2025
Time zone — UTC+03 (Moscow)
List of solar flares for October 16, 2025
The total number of solar flares of class C and higher — 17 flares
C class — 12 | M class — 5 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C5.8 | 23:40 | 23:43 | 23:46 | 4246 |
| C4.4 | 23:26 | 23:35 | 23:40 | 4246 |
| M1.1 | 22:00 | 22:16 | 22:36 | 4246 |
| C4.7 | 18:59 | 19:06 | 19:08 | 4246 |
| M1.3 | 16:53 | 17:08 | 17:22 | 4246 |
| C6.0 | 16:03 | 16:08 | 16:12 | 4246 |
| C8.4 | 14:41 | 15:03 | 15:25 | 4246 |
| C5.3 | 12:53 | 13:05 | 13:14 | 4246 |
| C3.5 | 12:41 | 12:49 | 12:53 | 4246 |
| C3.3 | 11:44 | 11:49 | 11:51 | 4246 |
| C5.1 | 10:56 | 11:01 | 11:13 | 4246 |
| C4.6 | 10:24 | 10:31 | 10:36 | 4246 |
| C5.5 | 09:36 | 09:43 | 09:47 | 4246 |
| C5.2 | 07:41 | 07:46 | 08:02 | 4246 |
| M1.1 | 03:17 | 03:21 | 03:24 | 4246 |
| M2.4 | 02:37 | 02:45 | 02:52 | 4246 |
| M2.7 | 00:55 | 01:28 | 02:05 | 4246 |