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    Altostratus Undulatus - Cleves, Ohio


    Photographer's description not available

    Photographer Ron Ciminero
    Date taken November 7, 2008

    Cleves, Ohio (Hamilton County)     map

    Event Altostratus undulatus

    Additional notes
    Altostratus undulatus is a type of altostratus cloud which is formed when a large layer of air is lifted into a zone of wind shear aloft.  The wind shear causes wave-like motion in the atmosphere, which is reflected in the undulating appearance of the cloud.  In this case, sufficient moisture was present for the wave-like clouds to appear as a continuous sheet.  In cases of less moisture, an observer may see "streaks" of clouds at the peaks of the waves only.  These clouds indicate wind shear and turbulence aloft, but usually do not produce any significant weather.

    Related NWS Product: None

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