Solar flares on January 20, 2001
The most powerful solar flare in 24 hours
M7.7 (strong) flare - January 20 at 4:20 PM
Solar activity index
Value as of the end of the day on January 20, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 19, 2001 to January 20, 2001
Time zone — UTC-05 (Concord)
List of solar flares for January 20, 2001
The total number of solar flares of class C and higher — 4 flares
C class — 2 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M7.7 | 16:06 | 16:20 | 16:32 | 9313 |
| M1.2 | 13:33 | 13:47 | 13:59 | 9313 |
| C1.0 | 09:28 | 09:31 | 09:35 | — |
| C1.49 | 03:49 | 03:56 | 04:00 | — |