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Polar vortex

UK //ˈpəʊlə ˈvɔːtɛks// US //ˈpoʊlər ˈvɔrtɛks// Pronunciation

Definition

A large, persistent area of low pressure and cold air around the Arctic.

Listen to definition

In simple words: A large area of cold air in the polar regions that moves south.

Examples

• The polar vortex has brought extremely low temperatures to the Midwest.
• During winter, the polar vortex can cause severe weather patterns across the United States.
• Scientists study the polar vortex to understand climate change better.
• Cities can experience heavy snowfall when the polar vortex moves south.
• The recent polar vortex event caught many people off guard with its intensity.

Usage notes

Used in weather reports and discussions about climate. Avoid in casual conversations unless relevant. More common in scientific contexts.

Grammar pattern

standalone term

Memory hint

Think of a 'polar' bear wearing a 'vortex' of icy wind.

Collocations

• polar vortex split
• polar vortex movement
• polar vortex formation

Synonyms

• Arctic air mass
• cold wave
• polar low

Common mistakes

• Confused with 'polar bear' - different concepts.
• Misunderstanding the term as only a winter occurrence.
• Assuming it only refers to temperature without considering wind patterns.