Don't forget the full moon making the high tides higher than usual.
I'm far enough away from the Potomac, and up on a hill, and on the second floor of the condo building, so I don't have to worry about flooding for my home.
I went grocery shopping yesterday before the insanity hit the stores. I have lots of batteries for flashlights (and my bike headlights, which can double as rather bright flashlights

), plus a new lantern that I picked up after the big power outage in July. I've also got the smartphone with the really good battery that I bought in July, and I kept the old smartphone so I can use that to play solitaire and removem without draining the battery on the new phone.
Tomorrow I'll fill up as many pitchers and water bottles as I can fit in my refrigerator and freezer. I'm running the dishwasher tonight and will do laundry tomorrow. I'm also meeting a friend for lunch tomorrow, and will fill up the gas tank and hit the ATM on my way home.
My real concern is my parents up on Long Island. I expect the main roads in their town will flood. They're on a hill so they'll be dry, but they will be cut off in the event of an emergency.