Solar flares on May 18, 2011
The most powerful solar flare in 24 hours
C2.0 (normal) flare - May 18 at 9:30 PM
Solar activity index
Value as of the end of the day on May 18, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 17, 2011 to May 18, 2011
Time zone — UTC+03 (Nazran)
List of solar flares for May 18, 2011
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 |
|---|---|---|---|---|
| C2.0 | 21:02 | 21:30 | 22:50 | — |
| C1.2 | 15:48 | 15:59 | 16:07 | 1218 |