Solar flares on March 21, 2003
The most powerful solar flare in 24 hours
C2.3 (normal) flare - March 21 at 4:55 PM
Solar activity index
Value as of the end of the day on March 21, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from March 20, 2003 to March 21, 2003
Time zone — UTC-08 (Anchorage) — summer time
List of solar flares for March 21, 2003
The total number of solar flares of class C and higher — 5 flares
C class — 5 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 22:50 | 22:58 | 23:01 | 314 |
| C1.0 | 20:35 | 20:42 | 20:48 | 314 |
| C2.3 | 16:50 | 16:55 | 16:57 | 314 |
| C1.8 | 06:15 | 06:29 | 06:41 | 314 |
| C1.1 | 00:58 | 01:10 | 01:17 | 314 |