Route 309 over the Blue Mountain is closed between Route 895 in West Penn Township and Mountain Road in Lynn Township.

The winter weather advisory is in effect until 4, with an additional 2 inches of snow expected.

Here is the latest forecast:

Today: Snow, mainly before 1 p.m. The snow could be heavy at times. High near 34. Southwest wind around 5 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 3 to 5 inches possible.

Tonight: Increasing clouds, with a low around 25. Southwest wind around 5 mph becoming calm.

Sunday: A slight chance of snow. Mostly cloudy, with a high near 34. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 20%.

Sunday Night: Partly cloudy, with a low around 15. Northwest wind around 5 mph.

M.L. King Day: Mostly sunny, with a high near 31. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.

Monday Night: Partly cloudy, with a low around 7.

Tuesday: Sunny, with a high near 19.

Tuesday Night: Mostly clear, with a low around 6.

Wednesday: Partly sunny, with a high near 31.

Wednesday Night: Mostly cloudy, with a low around 21.

Thursday: A chance of rain. Partly sunny, with a high near 36. Chance of precipitation is 30%.

Thursday Night: Mostly cloudy, with a low around 16.

Friday: Mostly sunny, with a high near 29.