Solar flares on July 21, 2000
The most powerful solar flare in 24 hours
M5.5 (strong) flare - July 21 at 10:37 AM
Solar activity index
Value as of the end of the day on July 21, 2000
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 20, 2000 to July 21, 2000
Time zone — UTC-04 (Dover) — summer time
List of solar flares for July 21, 2000
The total number of solar flares of class C and higher — 13 flares
C class — 8 | M class — 5 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M3.3 | 19:31 | 20:01 | 20:06 | 9088 |
| C8.5 | 18:40 | 18:48 | 18:58 | 9085 |
| C9.0 | 16:38 | 16:47 | 16:59 | 9090 |
| C4.3 | 16:17 | 16:21 | 16:23 | 9090 |
| C6.9 | 14:28 | 14:37 | 14:51 | 9097 |
| M5.5 | 10:30 | 10:37 | 10:43 | 9090 |
| C9.5 | 10:03 | 10:09 | 10:21 | 9087 |
| M1.9 | 06:33 | 06:50 | 06:56 | 9087 |
| M1.9 | 06:05 | 06:15 | 06:22 | 9090 |
| C6.3 | 04:39 | 04:59 | 05:08 | 9087 |
| M1.7 | 01:17 | 01:24 | 01:29 | 9090 |
| C6.0 | 00:37 | 00:41 | 00:45 | 9087 |
| C9.7 | 23:54 | 00:02 | 00:08 | — |