By Ken Jorgustin – Modern Survival Blog
Wind Chill Chart
The Wind Chill Chart shown above (from the National Weather Service) is a temperature index which accurately indicates how cold the air feels on human skin.
The Wind Chill Chart includes a frostbite indicator, showing the temperatures at which wind speed and exposure time will produce frostbite by the three color shaded areas of temperatures versus 30, 10, and 5 minutes until frostbite on exposed skin.
For example, using the chart – a temperature of 0°F and a wind speed of 15 mph will produce a wind chill temperature of -19°F. Under these conditions, exposed skin can freeze in 30 minutes