6,000 Flights Canceled

As of Friday morning, blizzard warnings were in effect for Washington, Baltimore, Philadelphia and New York City, and watches were in place in nearby areas -- covering nearly 30 million people. The Washington area could see about 24 inches of snow from Friday evening through Saturday, with potentially 28-mph winds (and gusts up to 38 mph), making for poor visibility. Even more snow -- up to 30 inches -- was possible just to the west, in northern Virginia and parts of Maryland. The Philadelphia area may have up to 14 inches.