 The National Weather Service in Blacksburg has issued a flash flood warning for Henry County, the city of Martinsville, until 4 p.m. Eastern Daylight Time. At 10.04 a.m. Eastern Daylight Time, Doppler radar indicated thunderstorms producing heavy rain across the warned area. The expected rainfall rate is 2 to 4 inches in one hour. Rainfall amounts up to 4 inches are possible in the warned area. Flash flooding expected to begin shortly.