Solar flares on October 18, 2003
The most powerful solar flare in 24 hours
C4.9 (normal) flare - October 18 at 10:23 PM
Solar activity index
Value as of the end of the day on October 18, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 17, 2003 to October 18, 2003
Time zone — UTC+05:30 (Aligarh)
List of solar flares for October 18, 2003
The total number of solar flares of class C and higher — 5 flares
C class — 5 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.6 | 22:36 | 22:45 | 23:00 | 484 |
| C4.9 | 21:58 | 22:23 | 22:28 | 484 |
| C3.3 | 20:18 | 20:52 | 21:01 | 484 |
| C3.3 | 14:19 | 14:30 | 14:34 | 484 |
| C2.0 | 11:01 | 11:08 | 11:10 | 484 |