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LITTLE ROCK, Ark. (AP) - Schools closed early, churches called off evening services and highway crews worked to keep major roads open as a winter storm is getting under way north Arkansas.

The National Weather Service says significant ice accumulations are possible as the storm builds Wednesday into Thursday, and widespread power outages may occur.

Roads were slick from Bentonville to Mena and west of Hot Springs as snow and sleet fell, mixing with some freezing rain as evening approached.

The weather service posted a variety of warnings for the northern half of the state, with ice storm and winter storm warnings for the more northern reaches and a winter weather advisory that included Little Rock.

Traffic was slowed on Interstate 40 between Conway and the Oklahoma border due to slush on the roadway.

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