Solar flares on September 21, 2002
The most powerful solar flare in 24 hours
C3.0 (normal) flare - September 21 at 7:20 AM
Solar activity index
Value as of the end of the day on September 21, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 20, 2002 to September 21, 2002
Time zone — UTC+04 (Tbilisi)
List of solar flares for September 21, 2002
The total number of solar flares of class C and higher — 6 flares
C class — 6 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.6 | 20:56 | 21:03 | 21:10 | 119 |
| C1.1 | 18:55 | 18:59 | 19:03 | — |
| C1.5 | 11:55 | 11:59 | 12:11 | — |
| C2.4 | 07:35 | 07:38 | 07:41 | — |
| C3.0 | 07:12 | 07:20 | 07:26 | 121 |
| C2.5 | 03:26 | 03:34 | 03:48 | — |