Dark blue cloudy sky

What is Cumulus?

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

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Glossary

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

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

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

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

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.