Dangerous wind chills blanket the Dakotas“Skin-freezing cold” may not be the scientific term. But the dangerously cold weather that settled over the Dakotas on Thursday was just that — cold enough to freeze skin within minutes. The National Weather Service issued wind chill advisories and warnings throughout both North Dakota and South Dakota into Friday morning. Forecasters said wind chills in some areas could drop as low as minus 55 degrees — prime conditions for frostbite. Winds were expected to reach up to 30 mph.