Quick Facts
- Type
- Weather Abbreviation
- Also Known As
- CAVOK
- Used By
- Pilots, ATC
Definition#
CAVOK (Ceiling And Visibility OK) is used in METAR and TAF reports when visibility is 10 kilometers or more, there are no clouds below 5,000 feet (or the highest minimum sector altitude, whichever is greater), no cumulonimbus, and no significant weather.
Why It Matters Operationally#
CAVOK simplifies reports and immediately communicates excellent flying conditions. Its presence means no weather-related restrictions apply to VFR or most IFR operations.