Solar flares on September 9, 2001
The most powerful solar flare in 24 hours
M9.5 (strong) flare - September 9 at 4:45 PM
Solar activity index
Value as of the end of the day on September 9, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 8, 2001 to September 9, 2001
Time zone — UTC-04 (Dover) — summer time
List of solar flares for September 9, 2001
The total number of solar flares of class C and higher — 13 flares
C class — 8 | M class — 5 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.4 | 23:12 | 23:15 | 23:17 | — |
| C4.9 | 18:33 | 18:38 | 18:41 | 9608 |
| M9.5 | 16:40 | 16:45 | 16:48 | 9608 |
| M2.0 | 14:35 | 14:41 | 14:43 | 9608 |
| C4.5 | 14:22 | 14:28 | 14:34 | 9608 |
| M2.2 | 11:23 | 11:26 | 11:28 | 9608 |
| M3.4 | 11:10 | 11:16 | 11:21 | 9607 |
| C7.5 | 09:31 | 09:35 | 09:44 | 9608 |
| C4.7 | 08:29 | 08:35 | 08:41 | — |
| C3.0 | 07:16 | 07:22 | 07:25 | 9608 |
| C3.2 | 06:52 | 06:56 | 06:58 | 9608 |
| M1.0 | 05:55 | 06:01 | 06:06 | 9608 |
| C4.5 | 04:00 | 04:05 | 04:11 | 9607 |