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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

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

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

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

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...