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

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

Features
 
overshooting tops
 
rotating updrafts
 
backlighting

User Interface
 
graphics
text

.
Backlighting
for better viewing of tornadoes

A view toward the west or northeast, often with revealing backlighting, typically offers the best view. This is the same Itaska, Texas storm, seen through a telephoto lens, looking west from about 15 miles!

[Image: tornado and wall cloud in backlighting (38K)]
Photograph by: NWS

Such spectacular distant views are relatively rare, especially in the east and southeast U.S. where low clouds, haze, precipitation, trees, and hills make spotting from a distance more difficult.

[Image: cumulonimbus cloud and tornado (40K)]
Photograph by: NWS
In this rare photograph we can see both the parent cumulonimbus cloud (Cb) and the tornado.

The indentation on the left side of the Cb in this photo seems to verify the presence of a rear flank downdraft (RFD), with a clear distinction between hard-textured updraft cloud and the ragged, dissipating cloud elements caught in the RFD. The tornado is at the intersecting point of the rotating updraft and RFD.



rotating updrafts
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.

Supercells