Is it cold enough for frostbite in Kentucky? This chart shows danger

Winter weather continues to move through Kentucky, following one of the earliest widespread cold outbreaks in the U.S. More Arctic air is expected to spill into the U.S., bringing temperatures as low as -25 to -30 in some states along the northern border.

Kentucky won’t see temperatures that extreme this weekend, but lows will drop into the single digits late Saturday into early Sunday, Dec. 13-14, and some areas could experience subzero temperatures late Sunday into Monday, Dec. 14-15.

Bitter winds will make it feel even colder, creating dangerous conditions for anyone outdoors. Even brief exposure can lead to frostbite if skin isn’t fully covered.

Kentucky snow: Live updates from Louisville

The wind chill index shows how quickly frostbite can occur in cold and windy conditions. To use it, find the wind speed at the top of the chart and the outside temperature on the right; where the two meet is the wind-chill temperature and the estimated time for frostbite to develop.

Late Sunday into early Monday, temperatures — combined with the wind chill — create a potential for frostbite within 30 minutes in Kentucky.

How to tell if you have frostbite

Frostbite often begins with redness or pain in any skin area, according to the National Weather Service. Other warning signs include skin that appears white or grayish-yellow, feels unusually firm or waxy or is numb. As frostbite progresses, the affected area may swell, develop blisters, or feel hard beneath the surface. Severe cases can cause the skin to turn blue or gray.

What to do if you or a loved one has frostbite

If you suspect frostbite, move indoors immediately to a warm location. While outdoors, do not rub or massage the affected areas, as this can cause further damage, according to the weather service. Until you can get inside, keep your hands in your armpits, hold onto another person or animal for warmth, drink warm liquids and layer extra clothing or blankets. Remove tight items like rings or watches that could restrict circulation.