The map above shows both the area that will get hit hardest by snow, and also when the snow will arrive. It will look like a "wall of white" as snow spreads from the Midwest into the mid-Atlantic. Strong winds will add to the dangers of the storm by blowing and drifting snow.

Heavy snow will arrive in central Pennsylvania and the Washington, D.C. area by lunchtime today.

By later this evening, Philadelphia and Atlantic City will be getting snow too.

Roadways will be a mess by tonight and Saturday morning in these areas.

Story by AccuWeather.com Meteorologist Meghan Evans,