WW2010
University of Illinois

WW2010
 
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> online guides
 
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Online Guides
 
  introduction
 
> meteorology
 
  remote sensing
 
  reading maps
 
  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

Types of T-storms
 
  storm spectrum
 
  single cell storms
 
  multicell clusters
 
  multicell lines
 
> supercells

Supercells
 
  introduction
 
  on radar
 
  schematic diagrams
 
  features
 
  variations
 
> hp supercells
 
  lp supercells
 
  multicell to supercell
 
  tornadic supercell

HP Supercells
 
> introduction
 
  characteristics
 
  westward view
 
  flow field
 
  outflow boundary

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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High Precipitation (HP) Supercell
very heavy rainfall, possible large hail, downbursts and tornadoes

In this photograph, the typical HP storm visual appearance is present: beaver's tail inflow bands curling into the front-flank updraft, a gray area of anvil precipitation to the north, and a dark rain and hail core to the southwest, falling from what earlier had been the rain-free base.

[Image: typical hp supercell (60K)]
Photograph by: Doswell

In the HP stage, this storm produced large hail, gusty winds, and extremely heavy rainfall, as well as several funnel clouds. One of these is visible where the inflow bands intersect the updraft. Continuous lightning occurred with this storm, much of it in-cloud, but a sizable percentage being cloud-to-ground strikes. Indeed, HP supercells seem to be especially prolific producers of lightning.

[Image: hp supercell with characteristic inflow bands (50K)]
Photograph by: McGinley

Another HP supercell is pictured in the distant west. The characteristic inflow bands are present in front of a translucent, anvil-born precipitation area on the extreme right. Note the rotating, vaulted Cb adjacent to the anvil precipitation, and the dark precipitation shaft in the left-center, emanating from an area that would be visually rain-free in a classic supercell. This storm produced a 1/2 mile wide tornado shortly before this time. It later produced several smaller and weaker tornadoes. Many times when a tornado does form from an HP supercell, the southwest flank precipitation area literally wraps around the tornado, obscuring it from view.



Supercells
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.

characteristics