Solar flares on July 17, 2004
The most powerful solar flare in 24 hours
X1.0 (very strong) flare - July 17 at 3:57 AM
Solar activity index
Value as of the end of the day on July 17, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 16, 2004 to July 17, 2004
Time zone — UTC-04 (Peterborough) — summer time
List of solar flares for July 17, 2004
The total number of solar flares of class C and higher — 15 flares
C class — 9 | M class — 5 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.5 | 22:51 | 22:57 | 23:03 | 649 |
| M2.0 | 20:05 | 20:35 | 20:40 | 649 |
| M1.1 | 18:54 | 19:08 | 19:16 | 649 |
| C5.7 | 18:28 | 18:39 | 18:46 | 649 |
| M2.0 | 17:24 | 17:31 | 17:38 | 649 |
| C5.7 | 16:54 | 17:03 | 17:10 | 649 |
| C3.4 | 16:36 | 16:45 | 16:51 | 649 |
| C5.3 | 15:15 | 15:18 | 15:20 | 652 |
| C2.2 | 14:21 | 14:27 | 14:31 | — |
| M2.5 | 12:45 | 12:51 | 12:57 | 649 |
| C2.6 | 11:48 | 11:57 | 12:03 | 649 |
| C8.8 | 08:31 | 08:55 | 09:01 | 649 |
| C7.2 | 07:24 | 07:37 | 07:42 | 649 |
| C5.0 | 05:46 | 05:53 | 05:57 | 649 |
| X1.0 | 03:51 | 03:57 | 03:59 | 649 |