The National Weather Service released an updated winter storm watch at 6:45 p.m. on Thursday valid from Saturday 1 p.m. until Sunday 1 p.m. for Westmoreland Ridges and Fayette Ridges.

A winter weather advisory is issued by the National Weather Service when a low pressure system results in a mixture of winter weather ‒ such as snow, freezing rain or sleet – that can be hazardous. This combination does not meet the criteria of a warning.

Western Pennsylvania is gearing up for a snowy weekend. Shannon Hefferan, a meteorologist with the National Weather Service in Moon, said 3 to 6 inches are expected to start falling around 3 p.m. Saturday.

The National Weather Service says heavy lake-effect snow is possible, with accumulations of half a foot or more in the most persistent bands.

Dangerously cold temperatures and wind chills will follow the storm on Sunday. Latest updates on timing and snowfall totals for New Jersey.

On Friday at 1:30 a.m. the National Weather Service issued a winter storm watch valid from Saturday 7 a.m. until Monday 1 a.m. for Southern Erie as well as Chautauqua and Cattaraugus counties.