The National Weather Service has issued a flash flood warning in effect from 9:28 a.m. until 3:30 p.m. today.
The warning is for eastern Wyandotte County, northeastern Johnson County, as well as Jackson County, Mo., and surrounding areas.
Slow-moving thunderstorms with very heavy rainfall are moving across the flash flood warning area, the weather service said.
Two to three inches of rain with locally higher amounts are expected with these storms.
Edwardsville and Kansas City, Kan., are on the list for the warning areas.
The weather service advised motorists not to drive into areas where the water covers the roadway. The water depth could be too great to allow a car to cross safely.