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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 prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

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

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

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

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 periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

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

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