Solar flares on March 21, 2013
The most powerful solar flare in 24 hours
M1.6 (strong) flare - March 21 at 4:04 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-06 (Denver) — summer time
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 | 21:51 | 21:56 | 21:58 | 1692 |
| C2.9 | 20:33 | 20:38 | 20:45 | 1692 |
| C1.1 | 18:28 | 18:31 | 18:35 | — |
| M1.6 | 15:42 | 16:04 | 16:36 | 1692 |
| C1.1 | 15:17 | 15:21 | 15:24 | — |
| C1.9 | 14:20 | 14:29 | 14:40 | 1692 |
| C3.5 | 12:10 | 12:22 | 12:28 | 1692 |
| C1.0 | 09:25 | 09:31 | 09:45 | 1692 |