wind shear

American  

[wind] / wɪnd /

noun

1. the rate at which wind velocity changes from point to point in a given direction.

2. a condition, dangerous to aircraft, in which the speed or direction of the wind changes abruptly.

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wind shear British  

/ wɪnd /

noun

1. stress on an aircraft in an area in which winds of different speeds and directions are close together

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wind shear Scientific  

1. A change in wind direction and speed between slightly different altitudes, especially a sudden downdraft. Depending on its scale, wind shear can cause a variety of effects, from minor turbulence to tornadoes. Wind shear caused by interactions between oceanic and atmospheric winds can be so strong that it can dissipate hurricanes.

2. See also shear force

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Etymology

Origin of wind shear

First recorded in 1940–45

Example Sentences

The most unpredictable storms occur when there is a moderate amount of wind shear and moisture in the atmosphere.

From BBC • Aug. 29, 2025

"Yes, more water vapor in the air can foster stronger convection, but a tornado is a very local feature and requires a very specific set of meteorological conditions, such as the right wind shear."

From Salon • Jul. 22, 2024

Guinn, of Embry-Riddle Aeronautical University, explains that some predict climate change could alter the jet stream and increase the wind shear, which would consequently drive up turbulence in the air.

From Los Angeles Times • May 21, 2024

Many pilots also look at the upper-level jet streams along their route for signs of wind shear, then plan to fly above, below or around those areas, he said.

From Seattle Times • May 21, 2024

As it did, wind shear blew it laterally off course.

From "The Martian" by Andy Weir