Solar flares on September 17, 2002
The most powerful solar flare in 24 hours
C8.8 (normal) flare - September 17 at 5:21 AM
Solar activity index
Value as of the end of the day on September 17, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 16, 2002 to September 17, 2002
Time zone — UTC-04 (Providence) — summer time
List of solar flares for September 17, 2002
The total number of solar flares of class C and higher — 11 flares
C class — 11 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.8 | 22:07 | 22:22 | 22:39 | 119 |
| C3.8 | 21:10 | 21:19 | 21:29 | 112 |
| C2.8 | 19:57 | 20:12 | 20:26 | 119 |
| C4.0 | 17:25 | 17:51 | 18:00 | — |
| C2.5 | 15:19 | 15:29 | 15:38 | 119 |
| C2.8 | 13:35 | 13:41 | 13:48 | 119 |
| C4.3 | 06:36 | 06:50 | 06:58 | 119 |
| C8.8 | 05:17 | 05:21 | 05:24 | 119 |
| C8.6 | 02:11 | 04:20 | 05:36 | 114 |
| C2.0 | 01:48 | 01:54 | 01:58 | 114 |
| C1.2 | 00:10 | 00:15 | 00:17 | 119 |