Winter conditions forced the closure of a nearly 300-mile stretch of Interstate 25 in Wyoming on Friday night.
Sections of the highway began closing around 6:30 p.m., with the remainder shut down about an hour later.
Interstate 25 between Casper and Buffalo is expected to reopen between 8:30 p.m and 10:30 p.m. on Saturday night. There is no estimated opening time for the remainder of the highway.
Most of Interstate 80 was also closed Friday night, and many of the highways that did remain open in Wyoming were slick with ice and snow.
The National Weather Service is forecasting moderate to heavy snow across much of Wyoming on Friday night and Saturday. High winds will make visibility difficult and road travel hazardous. Wind chills will also be near zero.
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Gusts of up to 60 mph are forecast for the Cheyenne area on Saturday.
An estimated 8 to 12 inches of snow are forecast to fall in Casper through Saturday, with 6 to 8 inches expected in Sheridan and Buffalo. A blizzard warning is in effect for Johnson County.
The weather service has forecast 4 to 6 inches of snow in Rawlins and 3 to 4 inches in Jackson.