Thunderstorms that could bring hail and up to 1.5 inches of rain are expected to begin Wednesday night and continue through Thursday, said Scott Truett, senior forecaster at the National Weather Service in St. Louis.
Less rain will be absorbed by the ground than usual because the ground is already saturated with water from melted snow, Truett said. Frozen terrain could also prevent rainwater from being absorbed, causing runoff rain to swell rivers and streams.
Residents who live in areas with poor drainage systems should monitor the weather, Truett said. Drivers should turn around instead of driving through flooded areas of roads.
Supervising editor is Elise Schmelzer.