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This Week in Weather: Gravity Waves

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On April 3, 2021, NOAA satellites spotted gravity waves over Pennsylvania.

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<i>Arrow with text saying Gravity Waves, points to a series of ridges that appear in the lcouds.</i>

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Waves form in the atmosphere when air is disturbed,
 like a stone dropped into a calm pond.

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The gravity waves seen over Pennsylvania were caused 
by air being forced upward by hills into a layer of stable air.

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Gravity causes the air to fall back down, and it begins to oscillate,
creating a ripple effect.

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Clouds can form on the cooled crests of these waves when
enough moisture is present in the atmosphere.

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When gravity waves are evident in water vapor imagery, it can indicate clear air turbulence.

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Turbulence can significantly impact aviation.

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When gravity waves form, NOAA satellites capture them in stunning detail.

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NOAA Satellite and Information Service Logo
www.nesdis.noaa.gov

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NASA Meatball 
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