For the Lehigh Valley region, the National Weather Service on Thursday forecast a 5% chance or less of receiving 4 inches of snow through Sunday night. At Lehigh Valley International Airport, the forecast includes a slight chance of snow from about daybreak to noon Sunday. The National Weather Service extended the Cold Weather Advisory through 10 a.m. Friday for Lehigh, Northampton and Warren counties and surrounding areas. The very cold temperatures in place both at the surface and aloft mean all precipitation will fall as snow. Latest update on the dangerously cold temperatures continuing across the eastern U.S. into early February.