Solar flares on May 18, 2025
The most powerful solar flare in 24 hours
C1.5 (normal) flare - May 18 at 11:18 PM
Solar activity index
Value as of the end of the day on May 18, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 17, 2025 to May 18, 2025
Time zone — UTC+00
List of solar flares for May 18, 2025
The total number of solar flares of class C and higher — 2 flares
C class — 2 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.5 | 23:03 | 23:18 | 23:33 | 4092 |
| C1.0 | 18:13 | 18:28 | 18:37 | 4089 |