The way the weather folks are talking, it sounds like it could be the kind of storm we had here in 1996 - everything shut down for a week, which is unusual for the D.C. area.
I think there was freezing rain on top of the snow, which made it worse.
-JT
I am hearing freezing rain and possible power loss can be expected. I will stock up on stuff.
I am guessing in my part of the woods, 3-6 inches, but will have to check back on the weather websites.