Dark blue cloudy sky

What is Isobar?

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

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Glossary

A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.

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

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

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

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

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

An instrument for measuring atmospheric pressure.