Solar flares on August 21, 2003
The most powerful solar flare in 24 hours
C4.9 (normal) flare - August 21 at 7:22 AM
Solar activity index
Value as of the end of the day on August 21, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 20, 2003 to August 21, 2003
Time zone — UTC-08 (Anchorage) — summer time
List of solar flares for August 21, 2003
The total number of solar flares of class C and higher — 3 flares
C class — 3 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.9 | 19:26 | 19:50 | 20:58 | 436 |
| C1.4 | 09:27 | 09:31 | 09:37 | 431 |
| C4.9 | 07:15 | 07:22 | 07:25 | 431 |