![]() In this generalized formula, the T is the air temperature (in Fahrenheit), while V is the wind speed in mph.Īlternatively, you can plug your values into our free calculator to skip the arithemtic. Where those two columns intersect, you have the wind chill temperature. Start by finding the approximate air temperature for your current conditions, and then find the current wind speed. On the uppermost horizontal column, you'll see air temperature readings. When you look at the wind chill chart above, you'll see numbers running down the furthermost lefthand, vertical column.Īs you go down, these numbers increase, and they correspond to wind speed calculated in miles per hour (MPH). Once you have these details, there are also two different ways you can calculate wind chill, using a chart or a forumla. To determine the "feels-like" temperature, you'll need to know two things: Winter in Florida probably won't lead to many discussions of the wind chill factor. In extreme conditions, it can take as little as five minutes for frostbite to set in. Good wind chill charts indicate how long it takes for frostbite to set in based on various temperatures and wind chill factors. In extreme weather situations, wind chill and your body's response to it can lead to: ![]() It generates more heat in an attempt to maintain your surface temperature, which translates into even greater heat loss. How does your body cope with this temperature decline? In other words, death can occur in severe weather conditions. Wind chill means faster loss of body heat and a more rapid reduction of body temperature to the ambient temperature. As a result, the "feels-like" temperature will coincide closely with the reading on the thermometer. ![]() Philly NYC SC to S NJ Florida Gulf Coast U.S.The stronger the wind, the more intense your loss of body heat.Ĭonversely, if winds remain light, you'll experience very little loss of warmth. It was developed in 1979 and is based on studies of evaporative skin cooling. Heat Index (Apparent Temperature) The "heat index" or apparent temperature is a measure of discomfort due to the combination of heat and high humidity. Since cars don't perspire, they can't be cooled below the air temperature by the wind so wind chill does not apply to them. Because of evaporation of perspiration, skin can actually cool to temperatures colder than the air temperature. Remember, wind chill is the temperature skin cools to due to evaporative cooling of moisture caused by the wind. Researchers found that wind chill temperatures of 19 below and colder on the new wind chill chart caused frostbite in 15 minutes or less. It appears the old formula overestimated how cold the wind makes it feel. The new formula requires stronger winds or colder temperatures to reach the wind chill levels we've talked about over the years. The faces of several men and women were exposed to different wind and temperature conditions to calculate the new formula. The new formula relies on modern heat transfer theory and is based on experiments conducted in a chilled wind tunnel in Toronto, Canada. The old formula was based on how a can of water cooled in the wind. The National Weather Service uses a new wind chill formula as of November 2001, replacing an equation developed in 1945 during expirements in Antarctica. Java Calculator Wind Chill Temperatures The Wind Chill temperatures is a measure of the relative discomfort due to the combined cold and wind. MID-ATLANTIC WEATHER STATION Wind Chill + Heat Index Tables
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