This isn't the sort of thing you like to read about the weather. From Capital Weather Gang:

Some computer models continue to simulate a crushing storm for early next week near or close to the East Coast. The explosive storm develops as tropical storm (or hurricane) Sandy merges with a powerful cold front charging towards the East Coast late this weekend.

Although a historic storm is a possibility, the storm could deliver just a glancing blow or even miss the East Coast entirely. And for residents of the mid-Atlantic (including Washington, D.C. and points further south), a direct hit is not particularly likely although it cannot be ruled out.

Meet Tropical Storm Sandy.

weather.com