A snow squall line the National Weather Service in Pittsburgh called "dangerous" was moving across southwestern Pennsylvania after 11 a.m.
The weather service reissued its special weather statement, saying the squall line moving into Washington, Allegheny and Beaver counties "will rapidly drop visibility to less than a quarter of a mile. Roads may become snow covered and slick."
Wind gusts higher than 25 mph will cause blowing snow.
The special weather statement is in effect until further notice for counties from Clarion, Butler and Armstrong in the north to Allegheny, Greene and into West Virginia in the south.
This round on snow comes on the heels of light accumulation early this morning. Some suburban locations received as much as an inch that caused slick travel for those having to make the morning commute on New Year's Eve.
Temperatures region-wide will range from the teens to mid 20s.
Farther north, in areas near Lake Erie, lake effect snow advisories and warnings have been posted.
First Published December 31, 2013 6:28 AM