Solar flares on April 18, 2001
The most powerful solar flare in 24 hours
C1.9 (normal) flare - April 18 at 3:11 AM
Solar activity index
Value as of the end of the day on April 18, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 17, 2001 to April 18, 2001
Time zone — UTC-03 (Halifax) — summer time
List of solar flares for April 18, 2001
The total number of solar flares of class C and higher — 2 flares
C class — 2 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.2 | 15:13 | 15:21 | 15:27 | — |
| C1.9 | 03:04 | 03:11 | 03:16 | — |