The waterfalls at Falls Park sit frozen with just a trickle of water flowing underneath, Sunday, Jan. 5, 2014, in Sioux Falls, S.D. The city and surrounding areas were under a wind chill advisory Sunday afternoon with wind chills levels expected to dip as low as 55 degrees below zero. (AP Photo/Dirk Lammers)
On Sunday, the National Weather Service posted an advisory on its website saying:
“The coldest temperatures in almost two decades will spread into the northern and central U.S. today behind an arctic cold front.” “Combined with gusty winds, these temperatures will result in life-threatening wind chill values as low as 60 degrees below zero (Fahrenheit/ -51 Celsius).”
Experts warned that in the weather that cold, frostbite can set in on uncovered skin in a matter of minutes.