© Eric Van Lochem

Cheyenne, Wyoming, United States of America

Latitude: 41° 32' 37'' N

Longitude: 104° 19' 9'' W

07 June 2012 1830 (Local Time)
Camera direction: towards NW

Image P/S code: S.10.8

Image I.D.: 5554

C_L = 9, C_M = /, C_H = /

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  Cumulonimbus praecipitatio murus

  Isolated supercell storms developed east of the Rocky Mountains during the late afternoon hours, tracking south-east across eastern Wyoming, USA. The severe convective storm pictured here sported a large and persistent wall cloud (supplementary feature murus), easily seen here under the rain-free base, accompanied by several brief funnel clouds, as it slowly moved from Chugwater, Wyoming toward the Nebraska-Colorado border. Precipitation can be seen on the right of the image.

  The wall cloud (murus) is a localized, persistent, and often abrupt lowering of the cloud from the base of a Cumulonimbus. It typically develops in the rain-free portion of a thunderstorm and indicates an area of strong updraft, usually associated with a supercell or severe multicell storm. Murus (wall clouds) that exhibit significant rotation and vertical motion may result in the formation of funnel clouds and tornadoes.

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  © Eric Van Lochem
  Cheyenne, Wyoming, United States of America
  Latitude: 41° 32' 37'' N
  Longitude: 104° 19' 9'' W
  07 June 2012 1830 (Local Time)
  
  
  Camera direction: towards NW
  C_L = 9, C_M = /, C_H = /
  Image P/S code: S.10.8
  Image I.D.: 5554