Solar flares on July 18, 2001
The most powerful solar flare in 24 hours
C5.4 (normal) flare - July 18 at 10:41 PM
Solar activity index
Value as of the end of the day on July 18, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 17, 2001 to July 18, 2001
Time zone — UTC+01 (Dublin) — summer time
List of solar flares for July 18, 2001
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 |
|---|---|---|---|---|
| C5.4 | 22:35 | 22:41 | 22:46 | 9546 |
| C2.4 | 21:54 | 22:02 | 22:09 | — |
| C2.0 | 21:32 | 21:37 | 21:44 | — |
| C3.0 | 00:06 | 00:11 | 00:14 | — |