The snow comes from two weak areas of low pressure. One brought snow to the Midwest, today; the other, rain to the south. They will combine their energy as they meet over Pennsylvania.
The then stronger area of low pressure will race away, and the snow will end by around sunset (5 PM).
Most snow will fall around noon, and we’ll net 2-4″.
Expect another cloudy and cold night on Saturday. Followed by a particularly cold Sunday. Highs struggle just to hit 30. Add brisk winds from the NW at 10-20 MPH, and the wind chill will make it feel closer to the teens when you stand outside. We’ll also have a passing flurry thanks to the winds coming from over the Great Lakes.
Monday marks another day with a mix of clouds and sun, and we wrap up 2012 dry. Highs will reach the low 30s.
More flurries return on Tuesday, and the rest of the first workweek of 2013 stays cold with highs at 30 Wednesday and Thursday and only mid 20s on Friday.