Solar flares on May 20, 2001
The most powerful solar flare in 24 hours
M1.5 (strong) flare - May 20 at 2:20 AM
Solar activity index
Value as of the end of the day on May 20, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 19, 2001 to May 20, 2001
Time zone — UTC-07 (Phoenix)
List of solar flares for May 20, 2001
The total number of solar flares of class C and higher — 9 flares
C class — 8 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.0 | 22:31 | 22:49 | 23:04 | — |
| C1.1 | 21:11 | 21:32 | 21:37 | 9461 |
| C9.0 | 20:11 | 20:20 | 20:25 | 9461 |
| C1.3 | 12:30 | 12:40 | 12:45 | — |
| C2.9 | 07:32 | 07:41 | 07:46 | — |
| C1.1 | 04:50 | 04:54 | 05:03 | — |
| C6.1 | 04:35 | 04:40 | 04:43 | — |
| C1.0 | 03:31 | 03:35 | 03:42 | — |
| M1.5 | 02:12 | 02:20 | 02:23 | — |