Solar flares on September 19, 2001
The most powerful solar flare in 24 hours
C7.8 (normal) flare - September 19 at 9:10 PM
Solar activity index
Value as of the end of the day on September 19, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 18, 2001 to September 19, 2001
Time zone — UTC-08 (Dillingham) — summer time
List of solar flares for September 19, 2001
The total number of solar flares of class C and higher — 5 flares
C class — 5 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C7.8 | 21:03 | 21:10 | 21:19 | 9628 |
| C3.4 | 18:24 | 18:32 | 18:36 | — |
| C7.5 | 10:45 | 10:52 | 11:00 | 9628 |
| C6.7 | 07:06 | 08:07 | 09:27 | — |
| C6.0 | 00:10 | 00:11 | 00:13 | 9621 |