Mammatus Clouds and Double Rainbow
by Thomas R Fletcher
Title
Mammatus Clouds and Double Rainbow
Artist
Thomas R Fletcher
Medium
Photograph - Photography
Description
Mammatus clouds aand double rainbow, Webster County, West Virginia, USA. Mammatus clouds are pouch-like clouds hanging downward from an upper or mid-level cloud layer (somewhat resembling mammaries—thus the name). Mammatus clouds are always part of the anvil blow-off of a cumulonimbus. They indicate inverse convection (downward instability); a very moist middle or upper cloud layer overlying a drier level below. A sky filled with Mammatus clouds indicates a strong thunderstorm is nearby (either approaching or exiting the area).
Uploaded
September 30th, 2016
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