Solar flares on July 18, 2003
The most powerful solar flare in 24 hours
C5.4 (normal) flare - July 18 at 12:05 AM
Solar activity index
Value as of the end of the day on July 18, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 17, 2003 to July 18, 2003
Time zone — UTC+00
List of solar flares for July 18, 2003
The total number of solar flares of class C and higher — 8 flares
C class — 8 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.4 | 23:21 | 23:24 | 23:28 | — |
| C1.8 | 22:33 | 22:43 | 22:47 | 412 |
| C2.4 | 19:43 | 19:54 | 20:03 | 412 |
| C4.8 | 18:23 | 18:28 | 18:35 | 410 |
| C1.3 | 13:35 | 13:50 | 13:54 | 412 |
| C1.2 | 07:35 | 07:42 | 07:48 | 410 |
| C2.0 | 04:04 | 04:19 | 04:26 | 410 |
| C5.4 | 00:02 | 00:05 | 00:10 | 410 |