“Arctic air is moving into the state,” meteorologist Kevin Fitzgerald said. The front brought its own moisture supply and the lift needed to produce snow. Lake-effect snows came to northwest Pennsylvania and the Laurel Mountains with the arctic air rushing over a warmer Lake Erie, he said. One of the day’s crashes involved a tractor-trailer which overturned about 12:40 p.m. on Route 36 near Roaring Spring, state police at Hollidaysburg said. Vernon Valtez Gray, 43, of Philadelphia tried to turn from Route 36 onto Closson Road to go to Smith Transport, police said. Gray made the turn at an unsafe speed and rolled his rig and load of about 37,000 pounds of plastic bags. He wasn’t injured. Gray temporarily was taken into custody on a warrant but was released at the request of Philadelphia authorities, police said. He was cited for failure to drive at a safe speed
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