SIDNEY, Neb. — Bitterly cold wind chills are expected across western Nebraska and eastern Colorado through the weekend, prompting multiple cold weather advisories and warnings from the National Weather Service.

Forecasters say wind chill values of 15 to 30 below zero are expected Friday morning, with the coldest conditions likely across north-central Nebraska. Wind chills of 10 to 25 below zero are also possible Saturday and Sunday mornings.

A Cold Weather Advisory is in effect from midnight Thursday night through noon Saturday for much of the Nebraska Panhandle, including Cheyenne, Deuel, Garden, Box Butte, Dawes, Morrill and northern Sioux counties. Additional advisories cover large portions of central and western Nebraska through Friday morning. In northeast and east-central Colorado, including Logan and Sedgwick counties, a Cold Weather Advisory remains in effect from early Friday through Sunday morning.

The dangerously cold conditions come as temperatures struggle to recover during the day. Thursday is expected to be mostly sunny with a high near 32, though wind chills will remain between 5 below and 5 above zero. A slight chance of snow develops late Thursday night with lows near 1.

Friday brings a better chance of snow, with cloudy and cold conditions and a high near 9. Wind chills are expected to range from 10 to 15 below zero, with gusty southeast winds adding to the cold. Snow chances linger into Friday night, with lows dropping to around 6 below zero.

Saturday and Sunday remain cold but quieter, with highs in the teens Saturday and near 21 on Sunday. Overnight lows both nights are expected to dip below zero.

The National Weather Service warns frostbite can occur on exposed skin in as little as 30 minutes under these conditions. Residents are urged to limit time outdoors, dress in layers, keep pets indoors when possible, and ensure livestock have adequate shelter, food and unfrozen water.