Dark blue cloudy sky

What is Mesocyclone?

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with a funnel cloud or tornado cloud beneath it and detectable on Doppler radar.

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Glossary

Coastal flooding occurs when water from the ocean, sea, or large lakes inundates land areas along the coast, usually due...

An instrument for measuring atmospheric pressure.

The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

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

Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.

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

A large body of air having similar horizontal temperature and moisture characteristics.

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...