Dark blue cloudy sky

What is Blocking Pattern?

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

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Glossary

A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...

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

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

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

A type of cloud consisting mostly of small particles such as ice particles.

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

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

Snow that rises to 8 feet or higher.

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.