According to the Weather Channel, the ground is heavily saturated throughout the region, so high winds are the least of everyone's problems.
Not sure whether it's the same south of here in the Carolinas, but here in Virginia we hit our average annual rainfall total around the end of July. It's been a VERY wet year- so the ground is absolutely saturated. There's been trees down in my area from fairly average thunderstorms- so while we're in little danger of storm surge all the way up here on the Potomac, heavy rains and driving winds could cause a whole lot of problems for anyone with trees near their homes.
Say, did I ever share photos of the four-story-tall oak trees in my yard? I should do that sometime. xp
Nah, jokes aside, this is a big problem storm for us here. Normally it's storm surge to worry about, but this has geared up to be a bad combination of effects in Washington- and Florence is expected to move up the coast after landfall, so while the core walls won't likely come here we'll be in for a few days of very bad weather regardless, in a city that just can't handle more of what it's throwing. Areas along the river like Georgetown and Old Town Alexandria are already looking at flooding conditions in places days before Florence's outer bands will arrive.