Winter weather advisory issued for region
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The National Weather Service has posted a winter weather advisory for counties in southwestern Pennsylvania, including Allegheny, and a winter storm warning for the ridge tops in eastern Westmoreland and Fayette counties.
The weather service said it expects two bursts of snow -- the first tonight will be south of Pittsburgh and the second late tonight and Saturday will spread across the Upper Ohio Valley, with brisk winds Saturday and Saturday night that could cause blowing snow.
In Pittsburgh, up to an inch of snow is expected overnight with an additional 1 to 3 inches Saturday. Temperatures are forecast to fall to 20 by Saturday evening with wind gusts up to 28 mph.
PennDOT said its crews were pre-treating highways and other main roads with brine and putting plows on trucks. The department cautioned about hazardous driving conditions that could occur once the temperature drops, especially on bridges and ramps on Saturday night.
"We are prepared in anticipation of rapidly changing conditions as temperatures drop over the weekend," said Jeff Karr, assistant district executive for maintenance. "Our crews will be out full force, but with predictions of up to four inches of accumulation and the possibility of ice, we urge drivers to use caution."
First Published February 10, 2012 2:10 pm