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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A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

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

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...

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

The branch of science dealing with the laws of motion of air or other gases.

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...