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Fort Belknap Reservation

The sun rises over the Fort Belknap Reservation along U.S. Highway 66 on Wednesday, February 15, 2017.

CASEY PAGE, Gazette Staff

GREAT FALLS — The temperature in a northern Montana town changed by more than 80 degrees in a single day this week.

The Great Falls Tribune reports the town of Fort Belknap recorded a temperature of 37 degrees below zero Tuesday morning.

The temperature rose to 45 degrees by the afternoon.

National Weather Service says the cause of the dramatic change was a chinook wind, a warm wind blowing down the side of the Rockies.

The Montana town of Loma experienced a 103-degree temperature swing on January 15, 1972.