Solar flares on January 21, 2003
The most powerful solar flare in 24 hours
M1.9 (strong) flare - January 21 at 9:26 AM
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-06 (Chicago)
List of solar flares for January 21, 2003
The total number of solar flares of class C and higher — 6 flares
C class — 4 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.2 | 22:35 | 22:44 | 22:50 | 260 |
| C2.3 | 15:29 | 15:40 | 15:48 | 260 |
| M1.9 | 08:59 | 09:26 | 09:52 | — |
| C3.0 | 06:46 | 07:10 | 07:31 | 260 |
| C1.8 | 03:20 | 03:27 | 03:33 | — |
| C2.9 | 01:57 | 02:22 | 02:43 | — |