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

Examples of jet stream in a Sentence

Recent Examples on the Web Three low-pressure systems formed a train of storms slowly moving along the jet stream — the river of air that moves weather systems — toward the Persian Gulf, said University of Pennsylvania climate scientist Michael Mann. Brittany Peterson, Twin Cities, 17 Apr. 2024 As the Arctic warms faster, the jet stream – which moves weather systems across the Earth – wobbles and weakens. Seth Borenstein, The Christian Science Monitor, 11 Mar. 2024 Winds roared to speeds of 265 mph high over Washington late Saturday — at about 35,000 feet above ground, cruising altitude for airplanes — as a powerful jet stream swept over the region. Jason Samenow, Washington Post, 18 Feb. 2024 In a La Nina year, the reverse occurs: Stronger trade winds push warm water towards Asia forcing cold water to rise and nudging the jet stream northward. David Montesino, Fort Worth Star-Telegram, 9 Feb. 2024 There was also outright weirdness — including a deranged jet stream with a wavy, loopy and swirling pattern that helped lock brutal heat domes in place. Tom Yulsman, Discover Magazine, 29 Jan. 2024 The storm, and a wall of arctic air, is expected to ride the jet stream across most of the nation over the next few days. USA TODAY, 15 Jan. 2024 Higher up in the atmosphere, a potent jet stream with intense winds and a pocket of energy will spread over the area from the west. Jeff Halverson, Washington Post, 3 Apr. 2024 But forecasters say the polar jet stream will again drop into Southern California on Monday and could produce 0.10 inches of rain across much of San Diego County, preventing the public from enjoying a partial eclipse of the sun. Gary Robbins, San Diego Union-Tribune, 3 Apr. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'jet stream.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1947, in the meaning defined above

Time Traveler
The first known use of jet stream was in 1947

Dictionary Entries Near jet stream

Cite this Entry

“Jet stream.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/jet%20stream. Accessed 2 May. 2024.

Kids Definition

jet stream

noun
: a long narrow wandering current of high-speed winds blowing from a generally westerly direction several miles above the earth's surface

More from Merriam-Webster on jet stream

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