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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

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

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 deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

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

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

A cloud of irregular appearance, composed of irregular cloud fragments.