The areas affected include... Tidal Potomac from Indian Head to Cobb Island MD... Tidal Potomac from Key Bridge to Indian Head MD...
At 625 PM EDT, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots. These thunderstorms were located along a line extending from 36 nm west of Key Bridge to 37 nm northwest of Leesylvania State Park, moving southeast at 25 knots.