cloud base

Where clouds start

Cloud base is the altitude at which the bottom of a cloud forms, where rising air cools enough for water vapor to condense.

Pilots and meteorologists use cloud base to assess visibility and flight conditions: The cloud base dropped to 500 feet, forcing us to divert.

A low cloud base often means poor visibility and difficult flying weather.

Related

condensation · stratus · marine layer · ceilometer · dew point · troposphere · altitude · flight level · boundary layer · fog · layer · entrainment · convection · meteorology · aviation · mist · visibility · murky

Categories
Opposites
vertical cloud position

cloud basecloud ceiling

Lowest cloud layer altitude

ground vs. sky reference

cloud baseground level

Surface elevation plane

sea level · terrain

Family

base, cloud, cloudy, overcast, clouds, cloudless, cloudburst, cloudiness, cumulus

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Rated G