The National Weather Service has extended the severe thunderstorm watch until 5 a.m. Wednesday.
Affected areas include Champaign, Coles, DeWitt, Douglas, Edgar, Ford, Iroquois, McLean, Moultire, Piatt and Will counties.
The National Weather Service says a flash flood watch is in effect until 7 a.m. Wednesday for Ford and Iroquois counties.
The National Weather Service has issued an urban and small stream flood advisory for Champaign and Piatt counties until 11:30 p.m.
Weather service Doppler radar indicated 1 to 2 inches of rain in a couple of hours.
Rainfall rates of up to 2 inches an hour over the next hour may cause some roads in low lying and pour drainage areas to flood.
Runoff from excessive rainfall could cause minor flooding in the area, especially along small streams.
Areas that may experience flooding include Champaign, Monticello, Bement, Cerro Gordo, Deland, Lake of the Woods, Mahomet, Savoy, Seymour, St. Joseph, Thomasboro, Tolono, Urbana and White Heath.
So if you come upon a flooded road, turn around and find another route. And if you have any outdoor items near a waterway, be sure to secure or move them so they don't wash away.
Also, a severe thunderstorm watch has been issued for the following counties until 10 p.m. Tuesday: Ford, Iroquois, Champaign, Vermilion, DeWitt, Piatt, Macon, Moultrie, Douglas and Edgar.