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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

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

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

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

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

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...