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What is Precipitation?

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet, and hail.

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Glossary

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

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