Solar flares on January 21, 2003
The most powerful solar flare in 24 hours
M1.9 (strong) flare - January 21 at 8:56 PM
Solar activity index
Value as of the end of the day on January 21, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 20, 2003 to January 21, 2003
Time zone — UTC+05:30 (Bhatpara)
List of solar flares for January 21, 2003
The total number of solar flares of class C and higher — 11 flares
C class — 10 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.9 | 20:29 | 20:56 | 21:22 | — |
| C3.0 | 18:16 | 18:40 | 19:01 | 260 |
| C1.8 | 14:50 | 14:57 | 15:03 | — |
| C2.9 | 13:27 | 13:52 | 14:13 | — |
| C4.1 | 11:20 | 11:27 | 11:32 | 260 |
| C8.1 | 07:53 | 07:58 | 08:03 | — |
| C2.0 | 06:51 | 07:04 | 07:10 | — |
| C1.5 | 05:23 | 05:28 | 05:31 | — |
| C1.6 | 04:52 | 04:57 | 05:05 | 260 |
| C1.5 | 03:13 | 03:16 | 03:19 | 267 |
| C1.7 | 00:00 | 00:51 | 01:03 | — |