Solar flares on May 13, 2013
The most powerful solar flare in 24 hours
X2.8 (very strong) flare - May 13 at 5:05 PM
Solar activity index
Value as of the end of the day on May 13, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 12, 2013 to May 13, 2013
Time zone — UTC+01 (London) — summer time
List of solar flares for May 13, 2013
The total number of solar flares of class C and higher — 13 flares
C class — 10 | M class — 1 | X class — 2
| Class | begin | max | end | region |
|---|---|---|---|---|
| C8.3 | 22:58 | 23:05 | 23:11 | 1745 |
| C2.9 | 22:26 | 22:29 | 22:34 | 1748 |
| X2.8 | 16:48 | 17:05 | 17:16 | 1748 |
| C5.3 | 14:55 | 15:40 | 16:10 | 1748 |
| C4.0 | 13:47 | 13:52 | 14:00 | 1748 |
| M1.3 | 12:57 | 13:03 | 13:09 | 1748 |
| C1.7 | 11:34 | 11:37 | 11:40 | — |
| C2.8 | 10:24 | 10:29 | 10:37 | 1748 |
| C4.5 | 09:35 | 09:38 | 09:44 | 1745 |
| C2.0 | 09:02 | 09:07 | 09:11 | — |
| C2.4 | 08:02 | 08:06 | 08:09 | — |
| X1.7 | 02:53 | 03:17 | 03:32 | 1748 |
| C9.3 | 01:32 | 01:39 | 01:46 | 1748 |