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

Its work, largely paid for with federal funds, has allowed for major improvements in the prediction of extreme weather events and a reduction in the number of air accidents caused by severe wind shear.

From Barron's • Jun. 1, 2026

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

From BBC • Aug. 29, 2025

That’s because it tends to reduce wind shear in the tropics, enabling hurricanes to grow in strength, and keeps Atlantic Ocean water warm, which helps fuel storms.

From Los Angeles Times • Sep. 5, 2024

"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

The mountains also create wind shear, which is when the wind suddenly changes direction, another deadly hazard to flight.

From "A Thousand Sisters" by Elizabeth Wein