The mid-Atlantic and Ohio Valley are preparing for an onslaught of snow and ice from a series of winter storms that are sweeping across the nation this week and into the weekend.

An updated winter weather advisory was issued by the National Weather Service on Monday at 4:33 p.m. valid from Tuesday 7 p.m. until Wednesday 7 a.m. for Lower Bucks.

The National Weather Service issued an updated winter weather advisory at 4:33 p.m. on Monday valid from Tuesday 4 p.m. until Wednesday 7 a.m. for Salem, Gloucester and Camden counties.