WW2010
University of Illinois

WW2010
 
  welcome
 
> online guides
 
  archives
 
  educational cd-rom
 
  current weather
 
  about ww2010
 
  index

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

Multicell Lines
 
  introduction
 
  components
 
  on satellite images
 
  along leading edge
 
  retreating lines
 
> linear radar echoes
 
  bow echoes
 
  more bow echoes

User Interface
 
  graphics
> text

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Linear Radar Echoes
squall lines on radar images

Radar indicates the linear nature of a squall line. The strongest radar reflectivity (VIP) levels on the leading edge reveal the locations of updrafts and adjacent regions of heavy precipitation.

[Image: radar view of multicell line (77K)]

From the eastern plains of Colorado we see a distant, approaching squall line, about 20 miles to the west. Further east from the High Plains, we would be less likely to have this unrestricted view because of haze and intervening clouds.

[Image: Distant Approaching Squall Line-Eastern Plains of Colorado (52K)]
Photograph by: Moller

Nevertheless, similar storm structure, with new updrafts developing on the leading edge of the gust front, will be present regardless of location.



retreating lines
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.

bow echoes