The snow is expected to start around 12 a.m. and fall heavy and hard, with the precipitation ending around 7 a.m.
The National Weather Service has issued a Winter Weather Advisory for part of the Triangle area, with Winter Storm Warnings to the west through Thursday morning.
The heaviest snows are expected to the north and west, with Orange and Durham counties seeing the heaviest accumulation in the Triangle, possibly up to 4 inches.
Officials are asking for help in keeping the roads safe Thursday.
The state Highway Patrol communication center normally receives about 1,300 calls a day. Tuesday, operators answered about 2,400 calls.
The lines are supposed to be for wrecked cars, but instead people are calling about road conditions, jamming the lines and making it more difficult for the people who need help to get it.
The DOT is also getting ready. Road crews used about 500 tons of salt on Tuesday's storm and asked Virginia for 500 tons to replace it. The trucks from Virginia started arriving around 9:30 p.m., while DOT drivers took a break.
"I sent everybody home about 4:30, told them to go get some supper and take a nap and be back at 12," said maintenance engineer Jerry Linder. andJulie Moos
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