Illinois Drought: Update August 31, 2005, Illinois State Water Survey

Illinois Drought

State-wide rainfall for the week of August 25-31 was 0.89 inches, 8 percent above normal. Much of southern Illinois received above-normal rainfall especially from the remains of hurricane Katrina. Meanwhile central and northern Illinois were considerably drier. Overall, August is slightly above normal statewide with 4.08 inches compared to a normal of 3.65 inches. However, northeastern Illinois and portions of central Illinois were below normal. The U.S. Drought Monitor still has much of northern and western Illinois is a severe to extreme drought due to long-term rainfall deficits of 8 to 10 inches since March 1.

 

Illinois

8/ 1/2005 to 8/31/2005

 

Climate <------Temperature-----> <---------Precipitation--------->

Division Actual Normal Dev Actual Normal Dev Percent

---------------------------------------------------------------------------------

Northwest 72.1 71.5 0.7 4.33 4.40 -0.07 98

Northeast 72.8 71.6 1.3 3.24 4.15 -0.90 78

West 75.0 73.9 1.1 4.03 3.58 0.45 113

Central 74.5 73.0 1.5 3.04 3.60 -0.56 84

East 73.6 72.4 1.2 2.88 3.77 -0.88 77

West-southwest 76.2 74.6 1.6 3.68 3.23 0.45 114

East-southeast 76.9 74.6 2.3 4.37 3.39 0.98 129

Southwest 78.7 75.9 2.8 5.06 3.34 1.72 151

Southeast 79.0 76.0 3.0 6.77 3.27 3.50 207

 

State 75.3 73.6 1.7 4.08 3.65 0.43 112

 

"Dev" means "Deviation From Normal"; "Percent" means "Percent of Normal"; and "Normal" is the 1971-2000 average.

 

The latest maps and tables on the current conditions in Illinois can be found at:

http://www.sws.uiuc.edu/atmos/statecli/Current/current.htm

 

Illinois Drought

Illinois State Water Survey

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