3/15/2024 0 Comments Printable wind chill chartT is the air temperature in degrees Fahrenheit, and V is the wind speed in miles per hour. The Fahrenheit version of the equation looks like this: The windchill chart above was designed to calculate how cold air feels on human skin accurately. The index is based on heat loss from exposed skin and was tested on human subjects’ faces.įor those interested, Windchill is a basic Algebraic formula: Windchill Temperature Chartįor example, when the temperature is 15 ° F and the wind speed is 30 miles per hour, the windchill, or how cold it feels, is -5 ° F. Under these conditions, exposed skin can freeze in 30 minutes. For example, a temperature of 0☏ and a wind speed of 15 mph will produce a wind chill temperature of -19☏. Each of the three shaded areas shows how long a person can be exposed before frostbite develops. The chart also includes a frostbite indicator, showing the points where temperature, wind speed, and exposure time will produce frostbite in humans. Here’s how to convert from Fahrenheit to Celsius. It shows air temperature in degrees Fahrenheit and wind speed in miles per hour. The Windchill Temperature ( WCT ) index gives the perceived temperature equivalent for the combination of cold air and wind. It replaced the prior 1945 Siple and Passel Index, created during a United States Antarctic Expedition from 1939 to 1941. The Windchill Temperature ( WCT) chart below was created in 2001/2002 by Environment Canada ( EC) and the U.S. Wind chill IS a good indicator of how long it will take for hypothermia or frostbite to occur. It reflects the rate of heat loss on exposed skin. The wind chill chart isn’t technically measuring “how cold it feels,” even though your body will certainly notice it’s colder. In northern climates, it’s not uncommon to hear wind chill warnings where exposed flesh can freeze in less than a minute. When the wind picks up speed, it draws more heat away, so if your skin is exposed to the wind, your body will cool faster than it would have on a still day.Ĭombining freezing temperatures with a frigid wind increases the danger of frostbite and hypothermia. Think of this buffer as an insulating jacket! A strong wind can disrupt this buffer layer, making us feel colder. Why? Our body keeps a “buffer” or thick layer of air next to our skin to help us regulate our body temperature (maintaining 98.6☏).
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