Solar flares on October 17, 2015
The most powerful solar flare in 24 hours
M1.5 (strong) flare - October 17 at 9:42 PM
Solar activity index
Value as of the end of the day on October 17, 2015
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 16, 2015 to October 17, 2015
Time zone — UTC+01 (London) — summer time
List of solar flares for October 17, 2015
The total number of solar flares of class C and higher — 14 flares
C class — 12 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.8 | 22:52 | 22:59 | 23:02 | 2437 |
| C4.7 | 22:12 | 22:19 | 22:25 | 2434 |
| M1.5 | 21:35 | 21:42 | 21:46 | 2437 |
| M1.1 | 21:09 | 21:23 | 21:28 | 2437 |
| C8.6 | 19:39 | 19:51 | 20:00 | 2437 |
| C1.0 | 17:53 | 17:56 | 18:00 | 2434 |
| C1.5 | 16:38 | 16:44 | 16:51 | 2435 |
| C1.8 | 15:22 | 15:29 | 15:39 | 2435 |
| C2.3 | 13:45 | 13:49 | 13:52 | 2434 |
| C4.5 | 13:31 | 13:35 | 13:39 | 2434 |
| C2.5 | 07:25 | 07:29 | 07:32 | 2434 |
| C2.8 | 05:13 | 05:17 | 05:22 | 2435 |
| C1.3 | 03:43 | 03:48 | 03:59 | 2434 |
| C3.4 | 02:21 | 02:40 | 02:56 | 2435 |