Solar flares on October 17, 2015
The most powerful solar flare in 24 hours
M1.5 (strong) flare - October 17 at 3:42 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-05 (Lincoln) — summer time
List of solar flares for October 17, 2015
The total number of solar flares of class C and higher — 12 flares
C class — 10 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C6.6 | 18:18 | 18:35 | 18:48 | 2437 |
| C4.8 | 16:52 | 16:59 | 17:02 | 2437 |
| C4.7 | 16:12 | 16:19 | 16:25 | 2434 |
| M1.5 | 15:35 | 15:42 | 15:46 | 2437 |
| M1.1 | 15:09 | 15:23 | 15:28 | 2437 |
| C8.6 | 13:39 | 13:51 | 14:00 | 2437 |
| C1.0 | 11:53 | 11:56 | 12:00 | 2434 |
| C1.5 | 10:38 | 10:44 | 10:51 | 2435 |
| C1.8 | 09:22 | 09:29 | 09:39 | 2435 |
| C2.3 | 07:45 | 07:49 | 07:52 | 2434 |
| C4.5 | 07:31 | 07:35 | 07:39 | 2434 |
| C2.5 | 01:25 | 01:29 | 01:32 | 2434 |