jet stream


Definition of jet stream 

: 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

This chilly air is the result of a plunge of the jet stream hovering over the central U.S., the network reports. Cierra Williams, Country Living, "The Weather Channel Predicts a Brutal Winter for Most of the Country," 16 Nov. 2018 Like any month, April’s patterns are driven by the position of the jet stream. Dave Epstein,, "March was terrible, weather-wise. What might April have in store?," 28 Mar. 2018 The company has simulated 30 million kilometers of potential navigation daily to better understand how jet streams and weather patterns will impact its preferred balloon routes. Nathan Mattise, Ars Technica, "Project Loon signs its first deal for Internet-delivering balloons—in Kenya," 19 July 2018 Tommy La Stella sent a fly ball into the jet stream for a ground-rule double down the left field line. Anthony Fenech, Detroit Free Press, "Detroit Tigers might be wise to trade Michael Fulmer. Here's why," 3 July 2018 The heat is due to a strong upper-level ridge of high pressure, or northward bulge in the jet stream, that's expanded into much of the eastern U.S., reported. Doyle Rice, USA TODAY, "Get used to it: Heat wave will continue to scorch eastern US this week," 2 July 2018 Within the next two weeks the jet stream should break up in the eastern U.S. and temperatures should increase. Avery Thompson, Popular Mechanics, "What Is Going on With the Northeast's Weather?," 20 Mar. 2018 High pressure over western Europe alters the jet stream and pushes clouds and rain over the continent's northern posts, causing foul weather in this North Atlantic island nation. Egill Bjarnason, Fox News, "Europe's sunny weather makes for a sorry summer in Reykjavik," 4 July 2018 Rather than dry soil, the record warmth this past May can be traced to the jet stream, the high-altitude current that separates cold air from warm air. Jason Samenow, Washington Post, "The U.S. just had its warmest May in history, blowing past 1934 Dust Bowl record," 7 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'jet stream.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of jet stream

1947, in the meaning defined above

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Statistics for jet stream

Last Updated

12 Dec 2018

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Time Traveler for jet stream

The first known use of jet stream was in 1947

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More Definitions for jet stream

jet stream


English Language Learners Definition of jet stream

: a strong current of fast winds high above the Earth's surface

jet stream


Kids Definition of jet stream

: high-speed winds blowing from a westerly direction several miles above the earth's surface

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Rhyming Dictionary: Words that rhyme with jet stream Encyclopedia article about jet stream

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a nest or breeding place

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