Solar flares on May 18, 2013
The most powerful solar flare in 24 hours
C6.0 (normal) flare - May 18 at 4:45 AM
Solar activity index
Value as of the end of the day on May 18, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 17, 2013 to May 18, 2013
Time zone — UTC+01 (London) — summer time
List of solar flares for May 18, 2013
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 |
|---|---|---|---|---|
| C2.9 | 21:16 | 22:18 | 22:55 | — |
| C1.1 | 19:12 | 19:22 | 19:25 | 1748 |
| C1.3 | 07:32 | 07:56 | 08:09 | 1752 |
| C1.2 | 06:05 | 06:18 | 06:31 | 1743 |
| C6.0 | 04:30 | 04:45 | 04:56 | 1748 |