WW2010
University of Illinois

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

Archives
 
> case studies

Case Studies
 
  introduction
 
  veterans day snow
 
  hurricane andrew
 
> 4/19 il tornadoes
 
  superstorm '93

4/19 IL Tornadoes
 
  headlines
 
  from the chase
 
  the damage
 
  how it happened
 
> nexrad close-ups
 
  data and images

NEXRad Close-Ups
 
  introduction
 
> jacksonville
 
  springfield
 
  decatur
 
  monticello
 
  urbana
 
  ogden

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.
.
Jacksonville, Illinois Tornado
nexrad close-ups

Once the conditions appear favorable for the development of severe weather, meteorologists turn their eyes to the skies and to the radar screens. The development of Doppler radar has greatly enhanced our ability to see what goes on inside a severe thunderstorm. More than a hundred Doppler radar sites are currently operational around the United States.

Doppler radar plays a vital role in the prediction and detection of severe weather, especially when the National Weather Service must determine when and where to issue severe weather warnings. This section provides a close-up examination of the radar signatures associated with six of the tornadoes that occurred on April 19, 1996.

[Image: (21K)]

6:10pm CDT (4/19/96) - LSX radar reflectivities show the hook echo associated with the tornadic supercell near Jacksonville, Illinois.

Radar velocities show the mesocyclone embedded in the Jacksonville supercell. The neighboring green and red pixels are a likely indicator of the mesocyclone circulation.



introduction
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.

springfield