Solar flares on June 4, 2025
The most powerful solar flare in 24 hours
C1.4 (normal) flare - June 4 at 11:39 PM
Solar activity index
Value as of the end of the day on June 4, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from June 3, 2025 to June 4, 2025
Time zone — UTC+02 (Vienna) — summer time
List of solar flares for June 4, 2025
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.4 | 23:34 | 23:39 | 23:43 | 4100 |
| C1.0 | 23:24 | 23:29 | 23:33 | 4100 |
| C1.0 | 23:08 | 23:15 | 23:24 | 4100 |
| C1.2 | 15:04 | 15:10 | 15:14 | 4100 |