Solar flares on May 21, 2002
The most powerful solar flare in 24 hours
M1.5 (strong) flare - May 21 at 2:39 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-07 (Phoenix)
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 |
|---|---|---|---|---|
| C5.0 | 20:18 | 20:54 | 22:02 | 0 |
| C9.7 | 16:14 | 17:30 | 18:28 | 0 |
| M1.5 | 14:20 | 14:39 | 15:00 | 9960 |
| C3.2 | 10:17 | 10:23 | 10:30 | 9963 |
| C1.9 | 03:15 | 03:21 | 03:29 | 9960 |