Solar flares on November 18, 2025
The most powerful solar flare in 24 hours
C1.5 (normal) flare - November 18 at 3:33 AM
Solar activity index
Value as of the end of the day on November 18, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from November 17, 2025 to November 18, 2025
Time zone — UTC-07 (Phoenix)
List of solar flares for November 18, 2025
The total number of solar flares of class C and higher — 1 flare
C class — 1 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.5 | 03:27 | 03:33 | 03:38 | 4284 |