Dark blue cloudy sky

What is Arctic High?

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

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Glossary

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

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

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

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

A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.

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

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...