Solar flares on June 18, 2004
The most powerful solar flare in 24 hours
C1.8 (normal) flare - June 18 at 10:23 PM
Solar activity index
Value as of the end of the day on June 18, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from June 17, 2004 to June 18, 2004
Time zone — UTC-08 (Anchorage) — summer time
List of solar flares for June 18, 2004
The total number of solar flares of class C and higher — 3 flares
C class — 3 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.8 | 22:16 | 22:23 | 22:30 | 635 |
| C1.3 | 15:48 | 15:56 | 16:03 | 634 |
| C1.8 | 08:19 | 08:26 | 08:30 | 635 |