at 2am local, there is little tidal surge(couple feet max), the wind is reported to be 32-40 from the W, feels more like 14. the river has no whitecaps. steady heavy rain, maybe 1"/hr. i live 4 miles due south of dca, on the flight path. full moon high tide is around 9am, and the wind is supposed to swing to the south. that should bring in some water.

isabel tracked west of the potomac, so she picked up huge quantities of water from the potomac and caused a huge surge along the entire potomac. i do not know if the water reached the runways at dca. dc(suburbs) were shut down and without power for a week or more.