Solar flares on April 18, 2002
The most powerful solar flare in 24 hours
C9.4 (normal) flare - April 18 at 3:02 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-04 (Kitchener) — summer time
List of solar flares for April 18, 2002
The total number of solar flares of class C and higher — 5 flares
C class — 5 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.0 | 11:12 | 12:12 | 12:57 | 9905 |
| C1.5 | 10:30 | 10:33 | 10:35 | 9907 |
| C2.6 | 06:44 | 06:48 | 06:51 | — |
| C9.4 | 02:36 | 03:02 | 03:29 | — |
| C1.8 | 01:27 | 01:30 | 01:33 | — |