mid-atlantic states and the ohio valley. that s one component, and second thing, the cold air it will bring in. how cold will it be? take a look. temperatures in sunday and monday, single digits and other spots below zero. fargo by monday morning, 14 degrees below zero. 9 degrees in chicago, and 20 below along michigan avenue with the wind kick up. that s one component. what we ll be seeing is heavy snowfall in the great lakes, ohio valley. a light dusting of snow on 80 north of pittsburgh, philadelphia, not a lot of action. that may come larlt on this weekend, and dry conditions in the southeast but cold air tumbling down to spots like atlanta, georgia. this a huge weather story. we have a lot more coming ahead, not just the next hour but throughout the afternoon and