© Eric Van Lochem
Cheyenne, Wyoming, United States of America
Latitude: 41° 32' 37'' N
Longitude: 104° 19' 9'' W
07 June 2012 1900 (Local Time)
Camera direction: towards NW
Image P/S code: P.10.8
Image I.D.: 5566
CL = 9, CM = /, CH = /
-
Cumulonimbus praecipitatio murus flumen
The main feature of this picture of a supercell storm is the large wall cloud. This is a localized, persistent and often abrupt lowering of the cloud from the base of a Cumulonimbus and is the supplementary feature murus. It typically develops in the rain-free portion of a supercell or severe multicell thunderstorm and indicates an area of strong updraft. Wall clouds (murus) that exhibit significant rotation and vertical motion may result in the formation of funnel clouds and tornadoes.
Also visible on the right of the image is an inflow band (flumen). These accessory clouds form an inflow into the supercell.
As this supercell advanced towards the photographer's location, the storm was beginning to morph into a more outflow-dominated feature and would soon become non-tornadic over the next hour. The mesocyclone was drawing in cooler outflow air from weaker storms a few miles to the south, inhibiting its ability to produce a tornado. Large hail was also beginning to wrap around the mesocyclone and was visible falling immediately behind the wall cloud.
Links in the image description will highlight features on the image. Mouse over the features for more detail.
© Eric Van LochemCheyenne, Wyoming, United States of AmericaLatitude: 41° 32' 37'' NLongitude: 104° 19' 9'' W07 June 2012 1900 (Local Time)Camera direction: towards NWCL = 9, CM = /, CH = /Image P/S code: P.10.8Image I.D.: 5566
This is the 1200 UTC hodograph from Denver, Colorado, USA on 7 June 2012. The pronounced curvature of the vertical wind profile indicated a large amount of directional shear, favourable for the development of rotating thunderstorms.
© University of Wyoming
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.
Links in the image description will highlight features on the image. Mouse over the features for more detail.
© Eric Van LochemCheyenne, Wyoming, United States of AmericaLatitude: 41° 32' 37'' NLongitude: 104° 19' 9'' W07 June 2012 1830 (Local Time)Camera direction: towards NWCL = 9, CM = /, CH = /Image P/S code: S.10.8Image I.D.: 5554