Solar flares on July 17, 2004
The most powerful solar flare in 24 hours
X1.0 (very strong) flare - July 17 at 4:57 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-03 (Halifax) — summer time
List of solar flares for July 17, 2004
The total number of solar flares of class C and higher — 16 flares
C class — 10 | M class — 5 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.5 | 23:51 | 23:57 | 00:03 | 649 |
| M2.0 | 21:05 | 21:35 | 21:40 | 649 |
| M1.1 | 19:54 | 20:08 | 20:16 | 649 |
| C5.7 | 19:28 | 19:39 | 19:46 | 649 |
| M2.0 | 18:24 | 18:31 | 18:38 | 649 |
| C5.7 | 17:54 | 18:03 | 18:10 | 649 |
| C3.4 | 17:36 | 17:45 | 17:51 | 649 |
| C5.3 | 16:15 | 16:18 | 16:20 | 652 |
| C2.2 | 15:21 | 15:27 | 15:31 | — |
| M2.5 | 13:45 | 13:51 | 13:57 | 649 |
| C2.6 | 12:48 | 12:57 | 13:03 | 649 |
| C8.8 | 09:31 | 09:55 | 10:01 | 649 |
| C7.2 | 08:24 | 08:37 | 08:42 | 649 |
| C5.0 | 06:46 | 06:53 | 06:57 | 649 |
| X1.0 | 04:51 | 04:57 | 04:59 | 649 |
| C4.2 | 00:42 | 00:47 | 00:49 | 652 |