If you're flying to BOS tonight (or leaving from BOS tomorrow) watch out. Many flights due in this evening are already cancelled, including almost everything from ORD, DEN, SFO, and LAX.

We're supposed to get nasty weather (could be a foot of snow) but it's not supposed to start until after midnight. I'm a bit surprised, I would have thought that at least a few of these planes would have been turning around here this evening and would be full of pax wanting to get out before tomorrow. But I don't see evening flights out to some of those hubs, maybe they don't fly on Sunday nights?