Solar flares on January 18, 2002
The most powerful solar flare in 24 hours
C4.0 (normal) flare - January 18 at 3:54 PM
Solar activity index
Value as of the end of the day on January 18, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 17, 2002 to January 18, 2002
Time zone — UTC-09 (Dillingham)
List of solar flares for January 18, 2002
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 22:38 | 22:52 | 23:00 | — |
| C4.0 | 15:47 | 15:54 | 16:01 | 9787 |
| C2.6 | 06:20 | 07:06 | 07:21 | — |
| C1.7 | 02:53 | 03:01 | 03:08 | — |