A flash flood watch is in effect for most of eastern Oklahoma and part of northwest Arkansas as Tropical Depression Bill flows northward.
The National Weather Service predicts the storm could drop between 3 and 7 inches of rain across Oklahoma before it leaves the state Thursday. The flood watches will likely remain until Friday morning.
Forecaster Forrest Mitchell in Norman says there is also a marginal risk of weak tornadoes and thunderstorms. He says flash flooding on Wednesday and Thursday is the primary risk and warned drivers to steer clear of high water.
Mitchell says the threat of flooding will remain after the storm passes as water makes its way into rivers and lakes still swollen from May showers.