Solar flares on September 15, 2001
The most powerful solar flare in 24 hours
M1.5 (strong) flare - September 15 at 11:28 AM
Solar activity index
Value as of the end of the day on September 15, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 14, 2001 to September 15, 2001
Time zone — UTC+00
List of solar flares for September 15, 2001
The total number of solar flares of class C and higher — 9 flares
C class — 7 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.2 | 23:49 | 23:58 | 00:08 | — |
| C2.6 | 22:16 | 22:27 | 22:31 | — |
| C5.4 | 21:17 | 21:25 | 21:36 | 9616 |
| C8.8 | 20:25 | 20:33 | 20:46 | 9608 |
| M1.3 | 15:44 | 15:59 | 16:10 | 9616 |
| M1.5 | 11:04 | 11:28 | 11:54 | 9608 |
| C4.7 | 05:19 | 05:26 | 05:37 | — |
| C6.5 | 01:01 | 01:10 | 01:21 | — |
| C3.8 | 00:50 | 00:54 | 00:58 | — |