CHEYENNE, Wyo. (AP) — Back-to-back snowstorms and strong winds combined to complicate travel across much of Wyoming, where roads were closed in the eastern and southern parts of the state because of whiteout conditions.

The National Weather Service reported 4 inches (10 centimeters) of snow fell in Cheyenne from 7 p.m. Friday through 10 a.m. Saturday and “has been blown all over kingdom come by our winds,” said meteorologist Andrew Lyons.

That was added to a foot (30 centimeters) of snow that fell before Thanksgiving.

Wind gusts up to 50 mph (80 kph) created ground blizzards and below-zero wind chill temperatures in some areas. A 77 mph (124 kph) wind gust was reported in the mountains between Cheyenne and Laramie.

Roads in and out of Casper and Cheyenne were closed Saturday afternoon, including the entire 300-mile stretch (483-kilometer) of Interstate 25 in Wyoming. Interstate 80 across southern Wyoming also was closed.

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