The snowfall will spread eastward into North Dakota and western South Dakota impacting Grand Forks, Fargo and Rapid City late on Wednesday and into Thursday. The snow pushes even further east through upstate Minnesota and northwest Wisconsin late Thursday into Friday morning.
Behind the snow and the cold front a sharp shot of cold air will follow with temperatures falling into 20s. A few spots may reach into the teens across Montana and western North Dakota. The front will reach the Ohio/Tennessee Valleys and southeast Texas on Saturday. By Sunday it will exit the East Coast and Florida.
|Departure from Normal Morning Temperature Forecast (SUN, 10/7/12)|
Along the front, a line of strong to severe thunderstorms will be possible from the Mid-Mississippi River Valley (FRI) to the Tennessee Valley/Southeast (SAT) and Florida on Sunday. Behind the front, the cold air will continue to sink southward. Widespread frost could occur from the Mid-Mississippi Valley into the Ohio Valley this weekend with sub freezing temperatures possible in spots, too. Morning temperatures into the 50s will even be possible as far south as the Houston metro area and along the Gulf Coast.