Solar flares on September 30, 2001
The most powerful solar flare in 24 hours
M1.2 (strong) flare - September 30 at 9:36 PM
Solar activity index
Value as of the end of the day on September 30, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 29, 2001 to September 30, 2001
Time zone — UTC+00
List of solar flares for September 30, 2001
The total number of solar flares of class C and higher — 11 flares
C class — 9 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.2 | 21:29 | 21:36 | 21:45 | — |
| C5.1 | 19:46 | 20:14 | 20:29 | — |
| C4.4 | 18:41 | 18:45 | 18:51 | 9636 |
| C5.1 | 17:44 | 17:52 | 17:57 | — |
| C6.6 | 17:27 | 17:33 | 17:36 | 9628 |
| M1.0 | 11:31 | 11:41 | 12:19 | 9628 |
| C3.3 | 09:40 | 09:42 | 09:45 | 9637 |
| C6.1 | 08:10 | 08:39 | 08:45 | 9636 |
| C5.8 | 06:49 | 06:53 | 07:04 | 9636 |
| C8.4 | 05:29 | 06:06 | 06:20 | 9636 |
| C8.3 | 03:38 | 04:01 | 04:18 | — |