Solar flares on May 18, 2001
The most powerful solar flare in 24 hours
C9.1 (normal) flare - May 18 at 1:49 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+05 (Ufa)
List of solar flares for May 18, 2001
The total number of solar flares of class C and higher — 10 flares
C class — 10 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C5.7 | 23:24 | 23:35 | 23:45 | — |
| C2.5 | 20:39 | 20:49 | 20:53 | — |
| C2.4 | 19:54 | 20:01 | 20:09 | — |
| C6.4 | 11:29 | 11:40 | 11:56 | — |
| C1.2 | 07:35 | 07:38 | 07:40 | — |
| C2.2 | 07:15 | 07:19 | 07:22 | — |
| C2.2 | 04:17 | 04:24 | 04:34 | 9461 |
| C4.0 | 02:36 | 02:42 | 03:13 | 9461 |
| C9.1 | 01:41 | 01:49 | 01:59 | 9454 |
| C7.0 | 00:36 | 00:56 | 01:04 | 9454 |