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CHEYENNE, Wyo. (AP) — Parts of Wyoming and Nebraska will close out 2017 with a blast of cold and windy weather.

Temperatures dipping below zero (-18 Celsius) and winds up to 15 miles (24 kilometers) per hour will make for very cold wind chills Friday and Saturday nights.

The National Weather Service has posted a wind chill advisory for east-central Wyoming and northwest Nebraska. Nighttime wind chills in that area could hit 30 below zero (-34 Celsius) and even colder.

A high wind watch is meanwhile in effect for Laramie, where gusts Saturday could reach 45 miles (72 kilometers) per hour.

Heavy snow topping 1 foot (30 centimeters) is forecast for the mountains of the Yellowstone region through Saturday.