Solar flares on September 17, 2015
The most powerful solar flare in 24 hours
M1.1 (strong) flare - September 17 at 10:40 AM
Solar activity index
Value as of the end of the day on September 17, 2015
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 16, 2015 to September 17, 2015
Time zone — UTC+01 (London) — summer time
List of solar flares for September 17, 2015
The total number of solar flares of class C and higher — 13 flares
C class — 12 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C6.7 | 22:07 | 22:15 | 22:19 | 2415 |
| C3.3 | 20:47 | 20:54 | 20:57 | 2415 |
| C1.6 | 20:10 | 20:22 | 20:29 | 2415 |
| C3.2 | 19:08 | 19:18 | 19:27 | 2415 |
| C1.3 | 18:16 | 18:26 | 18:52 | 2415 |
| M1.1 | 10:34 | 10:40 | 10:45 | 2415 |
| C1.3 | 09:57 | 10:06 | 10:19 | 2415 |
| C1.0 | 07:34 | 07:48 | 08:09 | — |
| C2.9 | 06:59 | 07:11 | 07:13 | 2415 |
| C4.9 | 04:11 | 04:14 | 04:17 | 2415 |
| C9.5 | 03:52 | 04:03 | 04:09 | 2415 |
| C2.4 | 02:21 | 02:29 | 02:40 | 2415 |
| C6.0 | 00:48 | 00:57 | 01:04 | 2415 |