NWS / NOAA weather: Flash Flood Warning issued July 4 at 3:19PM CDT until July 4 at 9:00PM CDT by NWS Chicago IL

At 319 PM CDT, Doppler radar and automated rain gauges indicated
thunderstorms with rainfall rates of 2 to 3 inches per hour. Up to 1
inch of rainfall has occurred so far, with 2 to 3 inches of rainfall
possible. Flash flooding is ongoing or expected to begin shortly as
the intense rainfall rates expand eastward.

HAZARD...Flash flooding.

SOURCE...Radar and automated gauges.

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...
Aurora, Joliet, Plainfield, Oswego, Yorkville, Plano, Sandwich,
Montgomery, Boulder Hill, Newark, Millington, Millbrook, Bristol
and Little Rock.

Source: NWS / NOAA weather.