...FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Maryland, including the following areas, Carroll, Cecil, Frederick MD, Northern Baltimore, Northwest Harford, Northwest Howard, Northwest Montgomery and Southeast Harford and northern Virginia, including the following areas, Eastern Loudoun and Northwest Prince William. * WHEN...Until midnight EDT tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Numerous thunderstorms are expected to develop later this afternoon and continue through late this evening ahead of an advancing backdoor front moving in from the northeast, as well as along terrain features to the west. As these boundaries collide, slow-moving/training thunderstorms are possible. Particularly concerned about this occurring over the I-95 corridor. Rainfall amounts of 1 to 2 are possible, with isolated amounts up to 4 inches possible. This could occur over a short period of time, potentially resulting in flash flooding. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. &&
