Snow to begin after 9 p.m.

A light accumulating snow is expected tonight with the highest amounts in the Lehigh Valley/Berks County, northwestern New Jersey and the Poconos. Hazardous travel is possible and there could be some impact on the Friday morning commute.

For Saturday and Sunday, a significant winter storm moves across our region, however the details including precipitation types and impacts are still uncertain. A significant snow accumulation is probable across the southern Poconos and northern New Jersey. A flash freeze will occur on wet surfaces later Sunday afternoon and night as arctic air rapidly overspreads our area.

Dangerous wind chills will occur Sunday night through Tuesday.

Here’s the latest forecast from the National Weather Service:

Today: Mostly cloudy, with a high near 30. North wind around 5 mph becoming calm.

Tonight: Snow, mainly after 9 p.m. Low around 25. Southeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 90 percent. New snow accumulation of 1 to 2 inches possible.

Friday: Cloudy, then gradually becoming mostly sunny, with a high near 39. Calm wind becoming west around 6 mph in the afternoon.

Friday Night: Partly cloudy, with a low around 25. Northwest wind 5 to 7 mph.

Saturday: Snow, mainly after 1 p.m. High near 32. Light and variable wind becoming east 5 to 8 mph in the afternoon. Chance of precipitation is 90 percent. New snow accumulation of less than one inch possible.

Saturday Night: Snow. Low around 29. Chance of precipitation is 100 percent.

Sunday: Snow. High near 31. Chance of precipitation is 90 percent.

Sunday Night: Mostly cloudy, with a low around 4.

M.L. King Day: Mostly sunny and cold, with a high near 10.

Monday Night: Partly cloudy, with a low around 4.

Tuesday: Mostly sunny, with a high near 23.