jet stream

noun

: a long narrow meandering current of high-speed winds near the tropopause blowing from a generally westerly direction and often exceeding a speed of 250 miles (402 kilometers) per hour

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These effects, writes NWS, are more acute during the winter months when the jet stream is strongest over the United States, which causes colder and stormier than average conditions across the North and warmer, less stormier conditions in the south. —

John Tufts, The Indianapolis Star, 18 Dec. 2024 The jet stream is likely to prevent big storms up north from dipping into Southern California. —

Karen Kucher, The Mercury News, 11 Dec. 2024 How weather patterns guide lake-effect snow to Great Lakes region Large-scale weather and climate patterns, guided, in part, by the jet stream, play a major role in the storms and cold outbreaks that define winter weather across the Great Lakes. —

Carlie Procell, USA TODAY, 3 Dec. 2024 La Niña causes the jet stream to dip southward, allowing colder Arctic air to invade the Great Lakes region. —

Mark R. Weaver, Newsweek, 4 Dec. 2024 See all Example Sentences for jet stream