Solar flares on June 17, 2025
The most powerful solar flare in 24 hours
C9.9 (normal) flare - June 17 at 9:21 AM
Solar activity index
Value as of the end of the day on June 17, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from June 16, 2025 to June 17, 2025
Time zone — UTC+03 (Moscow)
List of solar flares for June 17, 2025
The total number of solar flares of class C and higher — 7 flares
C class — 7 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.4 | 23:48 | 23:59 | 00:11 | — |
| C2.3 | 23:34 | 23:38 | 23:42 | 4114 |
| C5.5 | 11:06 | 11:13 | 11:16 | — |
| C9.9 | 09:14 | 09:21 | 09:27 | — |
| C6.8 | 04:15 | 04:26 | 04:33 | 4114 |
| C4.1 | 03:49 | 03:53 | 03:56 | 4113 |
| C4.5 | 02:02 | 02:09 | 02:12 | 4114 |