Solar flares on July 21, 2000
The most powerful solar flare in 24 hours
M5.5 (strong) flare - July 21 at 12:07 PM
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-02:30 (Saint john's) — summer time
List of solar flares for July 21, 2000
The total number of solar flares of class C and higher — 14 flares
C class — 9 | M class — 5 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M3.3 | 21:01 | 21:31 | 21:36 | 9088 |
| C8.5 | 20:10 | 20:18 | 20:28 | 9085 |
| C9.0 | 18:08 | 18:17 | 18:29 | 9090 |
| C4.3 | 17:47 | 17:51 | 17:53 | 9090 |
| C6.9 | 15:58 | 16:07 | 16:21 | 9097 |
| M5.5 | 12:00 | 12:07 | 12:13 | 9090 |
| C9.5 | 11:33 | 11:39 | 11:51 | 9087 |
| M1.9 | 08:03 | 08:20 | 08:26 | 9087 |
| M1.9 | 07:35 | 07:45 | 07:52 | 9090 |
| C6.3 | 06:09 | 06:29 | 06:38 | 9087 |
| M1.7 | 02:47 | 02:54 | 02:59 | 9090 |
| C6.0 | 02:07 | 02:11 | 02:15 | 9087 |
| C9.7 | 01:24 | 01:32 | 01:38 | — |
| C4.0 | 00:37 | 00:42 | 00:46 | 9087 |