Solar flares on April 18, 2002
The most powerful solar flare in 24 hours
C9.4 (normal) flare - April 18 at 7:02 AM
Solar activity index
Value as of the end of the day on April 18, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 17, 2002 to April 18, 2002
Time zone — UTC+00
List of solar flares for April 18, 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 |
|---|---|---|---|---|
| C3.0 | 15:12 | 16:12 | 16:57 | 9905 |
| C1.5 | 14:30 | 14:33 | 14:35 | 9907 |
| C2.6 | 10:44 | 10:48 | 10:51 | — |
| C9.4 | 06:36 | 07:02 | 07:29 | — |
| C1.8 | 05:27 | 05:30 | 05:33 | — |
| C4.0 | 03:35 | 03:46 | 03:54 | — |