Solar flares on July 18, 2004
The most powerful solar flare in 24 hours
M2.0 (strong) flare - July 18 at 12:35 AM
Solar activity index
Value as of the end of the day on July 18, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 17, 2004 to July 18, 2004
Time zone — UTC+00
List of solar flares for July 18, 2004
The total number of solar flares of class C and higher — 16 flares
C class — 13 | M class — 3 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.7 | 22:08 | 22:15 | 22:18 | 652 |
| C1.3 | 21:39 | 21:42 | 21:49 | 649 |
| C2.3 | 18:43 | 18:47 | 18:53 | 649 |
| C1.7 | 18:05 | 18:09 | 18:11 | 649 |
| C1.2 | 17:49 | 17:54 | 17:57 | 649 |
| C4.1 | 17:17 | 17:20 | 17:22 | 649 |
| M1.9 | 17:04 | 17:13 | 17:15 | 649 |
| C1.6 | 16:43 | 16:47 | 16:50 | 649 |
| C1.4 | 16:25 | 16:29 | 16:32 | 649 |
| C9.4 | 14:09 | 14:13 | 14:16 | 649 |
| C4.0 | 13:37 | 13:48 | 13:55 | 649 |
| C2.9 | 12:25 | 12:29 | 12:33 | 649 |
| C1.6 | 11:35 | 11:39 | 11:42 | 652 |
| C1.2 | 05:52 | 06:07 | 06:11 | 649 |
| M1.5 | 02:51 | 02:57 | 03:03 | 649 |
| M2.0 | 00:05 | 00:35 | 00:40 | 649 |