Dark blue cloudy sky

What is Ceiling?

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

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Glossary

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....