Solar flares on October 17, 2015
The most powerful solar flare in 24 hours
M1.5 (strong) flare - October 17 at 8:42 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+00
List of solar flares for October 17, 2015
The total number of solar flares of class C and higher — 15 flares
C class — 13 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C6.6 | 23:18 | 23:35 | 23:48 | 2437 |
| C4.8 | 21:52 | 21:59 | 22:02 | 2437 |
| C4.7 | 21:12 | 21:19 | 21:25 | 2434 |
| M1.5 | 20:35 | 20:42 | 20:46 | 2437 |
| M1.1 | 20:09 | 20:23 | 20:28 | 2437 |
| C8.6 | 18:39 | 18:51 | 19:00 | 2437 |
| C1.0 | 16:53 | 16:56 | 17:00 | 2434 |
| C1.5 | 15:38 | 15:44 | 15:51 | 2435 |
| C1.8 | 14:22 | 14:29 | 14:39 | 2435 |
| C2.3 | 12:45 | 12:49 | 12:52 | 2434 |
| C4.5 | 12:31 | 12:35 | 12:39 | 2434 |
| C2.5 | 06:25 | 06:29 | 06:32 | 2434 |
| C2.8 | 04:13 | 04:17 | 04:22 | 2435 |
| C1.3 | 02:43 | 02:48 | 02:59 | 2434 |
| C3.4 | 01:21 | 01:40 | 01:56 | 2435 |