Solar flares on May 18, 2001
The most powerful solar flare in 24 hours
C6.4 (normal) flare - May 18 at 2:40 AM
Solar activity index
Value as of the end of the day on May 18, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 17, 2001 to May 18, 2001
Time zone — UTC-04 (Kitchener) — summer time
List of solar flares for May 18, 2001
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 |
|---|---|---|---|---|
| C1.0 | 21:44 | 21:48 | 21:52 | — |
| C5.7 | 14:24 | 14:35 | 14:45 | — |
| C2.5 | 11:39 | 11:49 | 11:53 | — |
| C2.4 | 10:54 | 11:01 | 11:09 | — |
| C6.4 | 02:29 | 02:40 | 02:56 | — |