Solar flares on July 13, 2004
The most powerful solar flare in 24 hours
M6.2 (strong) flare - July 13 at 3:32 PM
Solar activity index
Value as of the end of the day on July 13, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 12, 2004 to July 13, 2004
Time zone — UTC-04 (Dover) — summer time
List of solar flares for July 13, 2004
The total number of solar flares of class C and higher — 17 flares
C class — 13 | M class — 4 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 23:41 | 23:48 | 23:53 | 646 |
| C3.7 | 21:30 | 21:47 | 22:03 | — |
| C3.1 | 20:39 | 20:58 | 21:05 | 646 |
| C3.2 | 19:27 | 19:33 | 19:37 | 646 |
| C2.8 | 19:04 | 19:09 | 19:14 | 646 |
| C5.1 | 18:01 | 18:06 | 18:09 | 649 |
| C2.2 | 17:17 | 17:24 | 17:36 | 646 |
| M6.2 | 15:24 | 15:32 | 15:36 | 646 |
| M1.1 | 14:33 | 14:38 | 14:42 | 649 |
| C5.0 | 08:45 | 08:49 | 08:52 | 649 |
| M2.9 | 07:59 | 08:08 | 08:12 | 649 |
| M5.4 | 04:40 | 04:48 | 04:55 | 646 |
| C1.5 | 04:25 | 04:29 | 04:34 | 649 |
| C2.6 | 03:10 | 03:14 | 03:19 | 649 |
| C4.1 | 02:26 | 02:33 | 02:48 | 649 |
| C6.7 | 01:21 | 01:33 | 01:40 | 646 |
| C2.4 | 00:31 | 00:40 | 00:46 | 649 |