Solar flares on July 18, 2003
The most powerful solar flare in 24 hours
C4.8 (normal) flare - July 18 at 10:28 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-08 (Anchorage) — summer time
List of solar flares for July 18, 2003
The total number of solar flares of class C and higher — 6 flares
C class — 6 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.8 | 17:31 | 17:36 | 17:42 | 412 |
| C1.4 | 15:21 | 15:24 | 15:28 | — |
| C1.8 | 14:33 | 14:43 | 14:47 | 412 |
| C2.4 | 11:43 | 11:54 | 12:03 | 412 |
| C4.8 | 10:23 | 10:28 | 10:35 | 410 |
| C1.3 | 05:35 | 05:50 | 05:54 | 412 |