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

For climate scientists, there are few more pressing phenomena to understand than the jet stream, and the weather station would provide scientists an important new tool with which to gather data about it. National Geographic, "Inside the Everest expedition that built the world’s highest weather station," 27 June 2019 The jet stream and other circulation patterns are changing. Megan Specia, New York Times, "The heat wave is Europe’s new normal.," 26 June 2019 Third, climate change has also weakened the jet stream, permitting a warm and humid weather system to settle over north-eastern Greenland. The Economist, "Greenland’s ice sheet is melting unusually fast," 21 June 2019 In 2019, the persistently and highly amplified western jet stream has kept Colorado unusually cool. Chris Bianchi, The Denver Post, "How Colorado’s gray May helped fuel hundreds of Plains tornadoes," 6 June 2019 Every now and then, when the conditions are right, jet streams will push the cold air down. Emily Hopkins, Indianapolis Star, "This is how science links cold weather and global warming," 3 Jan. 2018 Scientists credited the pulse to a jet stream discovered within the earth's molten core, moving approximately 25 miles a year. David Grossman, Popular Mechanics, "The Government Shutdown Is Messing with North," 15 Jan. 2019 The jet stream is currently raging, the Washington Post reports, because of the convergence of abnormally hot air in the southern U.S. with frigid temperatures in the North. Sam Blum, Popular Mechanics, "Virgin Flight Reaches 801 MPH as Furious Jet Stream Propels Plane Faster Than Speed of Sound," 19 Feb. 2019 The jet stream, the river of strong high-altitude winds along which storms track, has persistently flowed from central Canada toward the Mid-Atlantic and Northeast states, from northwest to southeast. Jason Samenow, Washington Post, "Since March began, Washington has endured its windiest weather in many years," 20 Apr. 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

11 Jul 2019

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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

technical : 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

More from Merriam-Webster on jet stream

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

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