Solar flares on July 17, 2004
The most powerful solar flare in 24 hours
X1.0 (very strong) flare - July 17 at 7:57 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+00
List of solar flares for July 17, 2004
The total number of solar flares of class C and higher — 16 flares
C class — 12 | M class — 3 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.1 | 22:54 | 23:08 | 23:16 | 649 |
| C5.7 | 22:28 | 22:39 | 22:46 | 649 |
| M2.0 | 21:24 | 21:31 | 21:38 | 649 |
| C5.7 | 20:54 | 21:03 | 21:10 | 649 |
| C3.4 | 20:36 | 20:45 | 20:51 | 649 |
| C5.3 | 19:15 | 19:18 | 19:20 | 652 |
| C2.2 | 18:21 | 18:27 | 18:31 | — |
| M2.5 | 16:45 | 16:51 | 16:57 | 649 |
| C2.6 | 15:48 | 15:57 | 16:03 | 649 |
| C8.8 | 12:31 | 12:55 | 13:01 | 649 |
| C7.2 | 11:24 | 11:37 | 11:42 | 649 |
| C5.0 | 09:46 | 09:53 | 09:57 | 649 |
| X1.0 | 07:51 | 07:57 | 07:59 | 649 |
| C4.2 | 03:42 | 03:47 | 03:49 | 652 |
| C6.8 | 02:07 | 02:13 | 02:16 | 649 |
| C5.7 | 01:54 | 02:01 | 02:06 | 649 |