Solar flares on May 21, 2002
The most powerful solar flare in 24 hours
M1.5 (strong) flare - May 21 at 11:39 PM
Solar activity index
Value as of the end of the day on May 21, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 20, 2002 to May 21, 2002
Time zone — UTC+02 (Berlin) — summer time
List of solar flares for May 21, 2002
The total number of solar flares of class C and higher — 5 flares
C class — 4 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.5 | 23:20 | 23:39 | 00:00 | 9960 |
| C3.2 | 19:17 | 19:23 | 19:30 | 9963 |
| C1.9 | 12:15 | 12:21 | 12:29 | 9960 |
| C4.8 | 06:58 | 07:03 | 07:10 | 9960 |
| C2.2 | 03:39 | 03:44 | 03:48 | 9961 |