SIOUX FALLS, S. D. — The National Weather Service has issued a wind chill advisory from 6 p.m. today until 8 a.m. Sunday.
All that is required is a subtle rising motion in the air or a subtle cooling of the air at cloud level.
Such a forecast would be nearly impossible because wind over land is much more turbulent than wind over water.
Total snow accumulations of 2 to 5 inches are expected.
Very cold wind chills are expected, as low as 35 below zero, which can cause frostbite on exposed skin in as little as 30 minutes.
The advisory includes Nobles, Jackson, Rock, Pipestone, Murray and Cottonwood counties in Minnesota, as well as Lyon, Osceola and Dickinson counties in Iowa.
People are encouraged to use caution when traveling outdoors and wear appropriate clothing, including a hat and gloves.