Solar flares on March 21, 2013
The most powerful solar flare in 24 hours
M1.6 (strong) flare - March 21 at 3:04 PM
Solar activity index
Value as of the end of the day on March 21, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from March 20, 2013 to March 21, 2013
Time zone — UTC-07 (Phoenix)
List of solar flares for March 21, 2013
The total number of solar flares of class C and higher — 8 flares
C class — 7 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.1 | 20:51 | 20:56 | 20:58 | 1692 |
| C2.9 | 19:33 | 19:38 | 19:45 | 1692 |
| C1.1 | 17:28 | 17:31 | 17:35 | — |
| M1.6 | 14:42 | 15:04 | 15:36 | 1692 |
| C1.1 | 14:17 | 14:21 | 14:24 | — |
| C1.9 | 13:20 | 13:29 | 13:40 | 1692 |
| C3.5 | 11:10 | 11:22 | 11:28 | 1692 |
| C1.0 | 08:25 | 08:31 | 08:45 | 1692 |