Observations |
Reports |
Simulations |
Research Overview
On April 19, 1996, the largest single-day total of tornadoes ever
struck the state of Illinois. 36 tornadoes were documented,
some as strong as F-3 on the
Fujita tornado intensity scale.
We are studying the development of tornadic storms in this day,
by examining
National Weather Service
Doppler data and through simulation of the event
on the
NCSA
Origin2000 system.
Tornadoes also were reported in parts of Missouri, Iowa, Indiana
and Kentucky.
Beyond its importance as a severe midwest event,
the early storm initiation, evolution, and association with
mesoscale boundaries are of particular interest.
Research Description
Latest Developments - Sept. 2002
Participating Members
Conference proceedings
We are using MM5 and COMMAS to study
the convection on this day (see "Simulations" above).
With high-resolution numerical
studies of the outbreak, we are investigating:
Earlier 1-km animations are
here.
Our latest work regards idealized simulations of cell interaction.
The results, presented at the Severe Local Storms Conference
in San Antonio, is
online here.
Brian F. Jewett,
Bruce D. Lee,
Robert Wilhelmson
http://redrock.ncsa.uiuc.edu/AOS/publications/SLS00/jewett/"
| b-jewett@uiuc.edu
| homepage
| NCSA convective modeling group