At 1041 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the area with rainfall rates of 1 to 2 inches per hour. Up to 2 inches of rainfall has fallen so far. Additional rainfall in excess of 1 inch is possible, especially in northern Lake County.
HAZARD...Flash flooding.
SOURCE...Radar.
IMPACT...Rapid-onset flooding of creeks, streams, drainage ditches, streets, underpasses, low-lying areas, and other poor drainage areas.
Some locations that will experience flash flooding include... Chicago, Hammond, Gary, Oak Lawn, Calumet City, Roseland, South Shore, Englewood, Chicago Lawn, East Chicago, Schererville, Lansing, Highland, Blue Island, Munster, Alsip, Chatham, Auburn Gresham, Ashburn and New City.