The snow is expected to arrive late Friday night.
The National Weather Service in Pittsburgh has issued a winter weather advisory for a wide portion of western Pennsylvania from 3 a.m. to 3 p.m. Saturday. The storm is expected to drop 2 to 4 inches of snow by the end of the day Saturday. Here is the latest forecast: Take a look at the I-79 traffic camera at Bridgeville exit. View more traffic cameras here.