Illinois State Water Survey - University of Illinois at Urbana-Champaign

State Climatologist Office for Illinois

Tornado Maps for the State of Illinois and Each County

Dr. Jim Angel, State Climatologist

Tornadoes frequently occur in Illinois with numbers that are comparable to those in "tornado alley" in the Great Plains. Here are maps showing the geographic distribution of tornadoes across Illinois, each county, and the Midwest for 1950-2010. The data were obtained from NOAA's Storm Prediction Center and mapped using ArcGIS.

NOAA's Storm Prediction Center has detailed annual/monthly reports of severe weather from 2000 onward, as well as a nice interactive GIS mapping tool. All of these maps are png files.

Annual

Illinois by County

Illinois State Water Survey

2204 Griffith Dr
Champaign, IL 61820-7463
217-333-0729
jimangel@illinois.edu

Terms of use. Email the Web Administrator with questions or comments.

© 2009 University of Illinois Board of Trustees. All rights reserved.
For permissions information, contact the Illinois State Water Survey.
Water Survey Site Map