Flash Flood Watch In Effect Until 7 a.m. Thursday
The National Weather Service's Norman Forecast Office warns that the heavy rain and flash flooding threat will increase late Tuesday into Wednesday, especially over northwestern and central Oklahoma.
Rainfall rates may exceed one inch per hour for several hours, even with little to no thunder.
A flash flood watch is effective after 10 p.m. Tuesday for northern and central Oklahoma. Until then an area of mostly light rain will affect parts of northwest and central and southern Oklahoma.