Solar flares on April 18, 2011
The most powerful solar flare in 24 hours
C1.5 (normal) flare - April 18 at 12:02 PM
Solar activity index
Value as of the end of the day on April 18, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 17, 2011 to April 18, 2011
Time zone — UTC-07 (Phoenix)
List of solar flares for April 18, 2011
The total number of solar flares of class C and higher — 3 flares
C class — 3 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.0 | 22:08 | 22:12 | 22:17 | 1195 |
| C1.0 | 12:17 | 12:24 | 12:31 | 1195 |
| C1.5 | 11:55 | 12:02 | 12:08 | 1193 |