Solar flares on August 15, 2004
The most powerful solar flare in 24 hours
M9.4 (strong) flare - August 15 at 6:41 AM
Solar activity index
Value as of the end of the day on August 15, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 14, 2004 to August 15, 2004
Time zone — UTC-06 (Cheyenne) — summer time
List of solar flares for August 15, 2004
The total number of solar flares of class C and higher — 15 flares
C class — 10 | M class — 5 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C9.4 | 23:30 | 23:38 | 23:45 | 656 |
| C5.9 | 23:05 | 23:09 | 23:14 | 656 |
| M1.1 | 21:31 | 21:47 | 22:15 | 656 |
| C2.8 | 20:58 | 21:05 | 21:14 | 656 |
| C2.3 | 17:55 | 18:13 | 18:22 | 656 |
| C2.1 | 16:55 | 17:00 | 17:02 | 656 |
| C4.9 | 14:37 | 14:46 | 14:54 | 656 |
| M1.2 | 12:37 | 12:45 | 12:50 | 656 |
| C1.6 | 11:59 | 12:03 | 12:12 | 656 |
| C1.4 | 11:16 | 11:21 | 11:26 | 656 |
| C2.9 | 10:42 | 10:50 | 10:56 | 656 |
| C1.7 | 08:18 | 08:24 | 08:32 | 656 |
| M9.4 | 06:34 | 06:41 | 06:43 | 656 |
| M2.6 | 05:23 | 05:32 | 05:48 | 656 |
| M1.2 | 23:54 | 00:00 | 00:04 | 656 |