Woodward, Okla. —
OKLAHOMA CITY (AP) — Bitterly cold weather and a batch of snow swept across portions of Oklahoma on Sunday, snarling traffic behind a pair of wrecked tractor-trailers and prompting forecasters to warn of wind chill readings well below zero.
More than three dozen school districts in the northeastern part of the state said they would be closed Monday, extending the Christmas and New Year's Day break for some students.
North winds of more than 30 mph blew snow across highways in northeastern Oklahoma. On Interstate 40 between Henryetta and Checotah, three tractor-trailers were either off the road or flipped onto a side Sunday afternoon — hours after the snow had stopped.
The advisory is in effect from Sunday night until midday Monday. Forecasters say wind chill values could be as cold as 20 degrees below zero Monday morning in areas, with the coldest temperatures likely in northeastern Oklahoma.
On Sunday, many of the same areas saw snowfall. The National Weather Service says 5 inches of snow fell at Bartlesville and about 2 to 3 inches of snow fell in Ponca City. Woodward, Enid and Stillwater all saw about 1 to 2 inches of snow.
The Emergency Medical Services Authority says paramedics responded Sunday to 16 vehicle crashes, eight falls and two reports of exposure to the cold.
Highway officials said Interstate 40 in McIntosh County was closed twice Sunday because of the accidents.