WW2010
University of Illinois

WW2010
 
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Online Guides
 
  introduction
 
> meteorology
 
  remote sensing
 
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  projects, activities

Meteorology
 
  introduction
 
  air masses, fronts
 
  clouds, precipitation
 
  el nino
 
  forces, winds
 
  hurricanes
 
  hydrologic cycle
 
  light, optics
 
  midlatitude cyclones
 
> severe storms
 
  weather forecasting

Severe Storms
 
  introduction
 
  dangers of t-storms
 
  types of t-storms
 
> tstorm components
 
  tornadoes
 
  modeling

Tstorm Components
 
  introduction
 
  updrafts/downdrafts
 
  wind shear
 
  outflow phenomena
 
> wall clouds

Wall Clouds
 
  introduction
 
  beneath cb towers
 
  short-lived
 
> cyclic wall clouds
 
  with rotation

User Interface
 
  graphics
> text

NOTE: We've guessed that you're not using a client that supports colored tables and have tried to compensate. Low graphics mode looks much better on clients that do... we recommend switching to Netscape 3.0 or Microsoft Internet Explorer.
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Dissipating and Redeveloping Wall Clouds
indicative of multicell or non-tornadic supercell storms

This small wall cloud, seen looking north-northwest from about 10 miles away, was moving south-southeast. At this time previously strong southeast winds had become near calm, and within several minutes the wind shifted to northerly. The wall cloud clearly was undercut by outflow.

[Image: (50K)]
Photograph by: Moller

About 10 minutes later, the same wall cloud was in the process of dissipating on the right side of the photograph. A second and equally small, unimpressive wall cloud was developing due southwest, or to the left of the first wall cloud. The second wall cloud also lasted less than 10 minutes. Once again significant rotation was not observed.

[Image: (61K)]
Photograph by: Moller

The quick dissipation and redevelopment of these wall clouds are suggestive of a multicell or non-tornadic supercell storm. This storm did produce sporadic hail up to golf ball size and a brief gustnado along the flanking line, but no significant tornadoes.



short-lived
Terms for using data resources. CD-ROM available.
Credits and Acknowledgments for WW2010.
Department of Atmospheric Sciences (DAS) at
the University of Illinois at Urbana-Champaign.

with rotation