Solar flares on August 18, 2003
The most powerful solar flare in 24 hours
M2.0 (strong) flare - August 18 at 11:59 PM
Solar activity index
Value as of the end of the day on August 18, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 17, 2003 to August 18, 2003
Time zone — UTC-08 (Anchorage) — summer time
List of solar flares for August 18, 2003
The total number of solar flares of class C and higher — 6 flares
C class — 5 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M2.0 | 23:38 | 23:59 | 00:01 | 431 |
| C1.1 | 20:22 | 20:27 | 20:31 | — |
| C1.4 | 09:32 | 09:42 | 09:48 | 431 |
| C1.1 | 07:59 | 08:05 | 08:11 | 431 |
| C1.3 | 07:00 | 07:07 | 07:17 | 431 |
| C2.4 | 00:59 | 01:06 | 01:11 | 431 |