Solar flares on October 17, 2015
The most powerful solar flare in 24 hours
M1.5 (strong) flare - October 17 at 4:42 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-04 (Barrie) — summer time
List of solar flares for October 17, 2015
The total number of solar flares of class C and higher — 13 flares
C class — 11 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C6.6 | 19:18 | 19:35 | 19:48 | 2437 |
| C4.8 | 17:52 | 17:59 | 18:02 | 2437 |
| C4.7 | 17:12 | 17:19 | 17:25 | 2434 |
| M1.5 | 16:35 | 16:42 | 16:46 | 2437 |
| M1.1 | 16:09 | 16:23 | 16:28 | 2437 |
| C8.6 | 14:39 | 14:51 | 15:00 | 2437 |
| C1.0 | 12:53 | 12:56 | 13:00 | 2434 |
| C1.5 | 11:38 | 11:44 | 11:51 | 2435 |
| C1.8 | 10:22 | 10:29 | 10:39 | 2435 |
| C2.3 | 08:45 | 08:49 | 08:52 | 2434 |
| C4.5 | 08:31 | 08:35 | 08:39 | 2434 |
| C2.5 | 02:25 | 02:29 | 02:32 | 2434 |
| C2.8 | 00:13 | 00:17 | 00:22 | 2435 |