Solar flares on January 18, 2004
The most powerful solar flare in 24 hours
M1.4 (strong) flare - January 18 at 12:17 AM
Solar activity index
Value as of the end of the day on January 18, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 17, 2004 to January 18, 2004
Time zone — UTC+00
List of solar flares for January 18, 2004
The total number of solar flares of class C and higher — 4 flares
C class — 3 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.4 | 21:40 | 21:44 | 21:49 | 540 |
| C3.7 | 19:41 | 20:03 | 20:22 | — |
| C1.4 | 13:44 | 13:57 | 14:01 | 537 |
| M1.4 | 00:07 | 00:17 | 00:21 | 540 |