Quick Facts
- Type
- Weather Parameter
- Definition
- The height of the lowest layer of clouds reported as broken (BKN) or overcast...
- Used By
- Pilots, Dispatchers
Definition#
Ceiling is defined as the height above ground level (AGL) of the lowest layer of clouds or obscuring phenomena reported as broken (5/8 to 7/8 coverage) or overcast (8/8 coverage). Few (FEW) and scattered (SCT) layers do not constitute a ceiling.
Why It Matters Operationally#
Ceiling directly determines whether VFR or IFR conditions exist. Low ceilings may prevent visual approaches, require precision instrument approaches, or close the airport to traffic below certain approach categories.
Related Guides#
- How to Read a METAR
- How to Read a TAF
- Aviation Weather Explained — The Complete Operational Guide
- Runway Visual Range (RVR)
- Flight Delays & Cancellations Explained