Solar flares on September 20, 2002
The most powerful solar flare in 24 hours
M1.8 (strong) flare - September 20 at 5:28 AM
Solar activity index
Value as of the end of the day on September 20, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 19, 2002 to September 20, 2002
Time zone — UTC-04 (Lansing) — summer time
List of solar flares for September 20, 2002
The total number of solar flares of class C and higher — 8 flares
C class — 6 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.4 | 23:35 | 23:38 | 23:41 | — |
| C3.0 | 23:12 | 23:20 | 23:26 | 121 |
| C2.5 | 19:26 | 19:34 | 19:48 | — |
| C2.1 | 09:23 | 09:31 | 09:44 | — |
| C2.1 | 07:08 | 07:14 | 07:22 | 126 |
| M1.8 | 05:21 | 05:28 | 05:33 | 126 |
| C1.9 | 04:26 | 04:35 | 04:39 | 115 |
| M1.5 | 01:08 | 01:12 | 01:17 | 126 |