Response to Damaging Rains in Illinois: Monthly Rainfall Totals for Over 500 Sites

IMG_0631-smallerRecently, Illinois officials have sought a federal disaster declaration from USDA in response to the heavy rainfall and damaging flooding across Illinois during May, June, and July of 2015. Update August 12: all but one county in Illinois is eligible for federal agricultural disaster loans due to excess rain according to news reports.  

In response I have used resources here at the Illinois State Water Survey to set up data files with monthly rainfall and departures from normal (when available) for over 500 sites in Illinois to aid in identifying locations with potential problems.

Data and products in this effort are from the NWS Cooperative Observer Network, CoCoRaHS Volunteer Network, the Midwestern Regional Climate Center, and Illinois State Water Survey.

Agricultural Disaster Declaration for Illinois

Governor Quinn announced yesterday that federal disaster assistance is available to help Illinois farmers who suffered crop losses due to flooding this year (full press release).

As noted in the press release, the January-June period was the 4th wettest on record (27.2 inches, 8 inches above average) and an April that was the wettest on record with 7.59 inches.

I have generated a file with the monthly precipitation for 2011 for all available NWS cooperative observer sites in Illinois. The new 1981-2010 monthly precipitation normals for Illinois are posted as well. Additional precipitation data can be found at using their precipitation summary product. It works best if you select your county and not the state. 

January-June 2011 precipitation
January-June 2011 precipitation for Illinois. The heaviest totals were in southern Illinois. Click to enlarge.















January-June 2011 precipitation departure
January-June 2011 precipitation departure from average for Illinois. Areas in blue had precipitation that was at least 12 inches above average. Click to enlarge.