The entire Delaware Valley will see snow Sunday, with 3-6 inches expected in Philadelphia. On Monday and Tuesday, temps plummet into the teens and single digits.

The Lehigh Valley is under a winter storm warning Sunday for 4-8 inches of snow. Here’s when it will start and what to expect.

On Sunday at 9:36 a.m. an updated winter storm warning was issued by the National Weather Service valid from 10 a.m. until Monday 1 a.m. for Carbon, Monroe and Northampton counties.