* WHAT. Flash flooding caused by excessive rainfall is possible. * WHERE. Portions of western Maryland, including the following areas, Eastern Garrett and Western Garrett, western Virginia, including the following areas, Augusta, Eastern Highland, Rockingham and Western Highland, and eastern West Virginia, including the following areas, Eastern Grant, Eastern Pendleton, Hardy, Western Grant, Western Mineral and Western Pendleton. * WHEN. From 1 PM EDT this afternoon through this evening. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS. - Thunderstorms are expected to form this afternoon as a backdoor cold front runs into the higher terrain. Storms will produce very heavy rainfall and move very slowly. Rainfall amounts of 1 to 3 inches are possible, with isolated totals of 3 to 5 inches. Flash flooding may occur as a result. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information
