Solar flares on September 15, 2001
The most powerful solar flare in 24 hours
M1.5 (strong) flare - September 15 at 8:28 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-03 (Halifax) — summer time
List of solar flares for September 15, 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 |
|---|---|---|---|---|
| C5.8 | 23:42 | 23:48 | 23:54 | — |
| C1.6 | 23:23 | 23:31 | 23:35 | — |
| C2.5 | 21:33 | 21:34 | 21:37 | — |
| C2.9 | 21:09 | 21:21 | 21:32 | — |
| C2.2 | 20:49 | 20:58 | 21:08 | — |
| C2.6 | 19:16 | 19:27 | 19:31 | — |
| C5.4 | 18:17 | 18:25 | 18:36 | 9616 |
| C8.8 | 17:25 | 17:33 | 17:46 | 9608 |
| M1.3 | 12:44 | 12:59 | 13:10 | 9616 |
| M1.5 | 08:04 | 08:28 | 08:54 | 9608 |
| C4.7 | 02:19 | 02:26 | 02:37 | — |