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

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

Temperature scale, abbreviated as °C, found by accepting the freezing point of water at one atmospheric pressure as zero...

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

A very cold high pressure that originates over the Arctic Ocean.

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

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

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

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

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