Solar flares on October 17, 2001
The most powerful solar flare in 24 hours
M1.1 (strong) flare - October 17 at 7:23 AM
Solar activity index
Value as of the end of the day on October 17, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 16, 2001 to October 17, 2001
Time zone — UTC-04 (Dover) — summer time
List of solar flares for October 17, 2001
The total number of solar flares of class C and higher — 8 flares
C class — 7 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.3 | 23:02 | 23:15 | 23:29 | — |
| C2.7 | 21:55 | 21:58 | 22:00 | — |
| C2.5 | 13:17 | 13:21 | 13:24 | 9661 |
| C3.9 | 12:13 | 12:21 | 12:34 | 9659 |
| M1.1 | 07:16 | 07:23 | 07:28 | 9658 |
| C2.51 | 05:30 | 05:43 | 05:56 | — |
| C2.33 | 04:35 | 04:47 | 04:50 | — |
| C3.5 | 03:14 | 03:21 | 03:30 | 9661 |