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What is El Niño?

A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global weather patterns, including increased rainfall in some regions and drought in others.

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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...

Snow that rises to 8 feet or higher.

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

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

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

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

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