Solar flares on September 17, 2001
The most powerful solar flare in 24 hours
M8.1 (strong) flare - September 17 at 9:20 PM
Solar activity index
Value as of the end of the day on September 17, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 16, 2001 to September 17, 2001
Time zone — UTC+05:30 (Abbigeri)
List of solar flares for September 17, 2001
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 |
|---|---|---|---|---|
| M8.1 | 21:14 | 21:20 | 21:24 | 9608 |
| C3.3 | 19:59 | 20:09 | 20:20 | — |
| C3.6 | 18:13 | 18:23 | 18:29 | — |
| C3.7 | 16:41 | 16:46 | 16:51 | — |
| C7.0 | 14:56 | 15:11 | 15:18 | 9621 |
| M1.5 | 13:48 | 13:55 | 14:04 | 9616 |
| C3.6 | 12:17 | 12:23 | 12:30 | 9608 |
| C4.4 | 11:12 | 11:16 | 11:19 | — |
| C4.9 | 09:59 | 10:32 | 10:53 | — |
| C3.9 | 07:34 | 07:37 | 07:40 | — |
| C4.1 | 05:17 | 05:20 | 05:25 | 9616 |
| C3.5 | 00:07 | 00:17 | 00:31 | 9616 |