The National Weather Service said a “dangerous” snow squall was moving through the district this morning.
It issued a winter weather advisory for several counties to the north of Pittsburgh until 1 p.m. A special weather statement was issued for Allegheny, Washington and Westmoreland counties, saying the squall could quickly reduce visibility and coat roads.
The squalls may have been a factor in multi-vehicle crashes on Interstate 79 in Washington County and I-80 in Mercer County. Eastbound I-80 was closed from Sharon to Mercer, and not expected to reopen until 1:30 p.m. The crash on I-79 near Houston involved 10 to 15 vehicles. There was no immediate word of injuries.
Wind gusts of 52 mph were reported at Arnold Palmer Regional Airport in Unity; 44 mph at Du Bois Airport; 43 at Allegheny County Airport; and 41 at Pittsburgh International.