Solar flares on July 21, 2003
The most powerful solar flare in 24 hours
C4.4 (normal) flare - July 21 at 1:11 AM
Solar activity index
Value as of the end of the day on July 21, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 20, 2003 to July 21, 2003
Time zone — UTC+06 (Omsk)
List of solar flares for July 21, 2003
The total number of solar flares of class C and higher — 14 flares
C class — 14 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.7 | 13:36 | 13:39 | 13:41 | — |
| C1.7 | 13:24 | 13:27 | 13:31 | 410 |
| C2.3 | 09:39 | 09:47 | 09:53 | — |
| C1.4 | 09:19 | 09:28 | 09:36 | — |
| C3.3 | 08:19 | 08:28 | 08:34 | 410 |
| C1.3 | 07:50 | 07:55 | 07:58 | — |
| C1.5 | 07:18 | 07:24 | 07:37 | — |
| C1.2 | 07:09 | 07:12 | 07:15 | — |
| C3.2 | 06:28 | 06:35 | 06:41 | 410 |
| C1.8 | 06:04 | 06:08 | 06:21 | 417 |
| C1.6 | 05:37 | 05:41 | 05:44 | — |
| C2.7 | 03:03 | 03:08 | 03:14 | 410 |
| C4.4 | 01:04 | 01:11 | 01:25 | 410 |
| C3.1 | 00:06 | 00:11 | 00:17 | — |