The wind chill factor comes from a formula that calculates the feel of the air.
In practical meteorological terms, there is an actual air temperature and a “pleasant” temperature. Television meteorologists often provide both numbers during especially hot summer days or cold winter days. In summer, the “feel” of temperature is called the heat index, but during the winter, the “feel” of temperature is often called the wind chill factor. This is a combination of air temperature and wind speed that affects the freezing rate of exposed skin.
The wind chill factor can be a major factor in some winter storms, as the wind speed can make winter air much colder than the actual reported temperature.
A quick demonstration of the effects of wind chill can be performed at your desk right now. Simply blow a quick stream of air into your exposed forearm or hand. The area receiving the rapid air movement should be noticeably cooler than the rest of the arm. This is the effect of the thermal sensation. As the accelerated air from his mouth moved across the exposed skin, the normal evaporation rate was temporarily increased. The heat radiating from his arm was also affected by the change in wind speed.
Human ears are sensitive to cold.
The actual windchill effect thus works on a much larger scale. On a relatively warm winter day, the air temperature can be 32°F (O°C). This wouldn’t be especially uncomfortable for the average person wearing proper winter clothes, but what if the wind speed increased to 40km/h? The “feel” temperature would drop to 19°F (-7°C). At this temperature, exposed skin may frostbite within a few hours.
Cold weather experts recommend covering your head and hands during winter weather events.
If the air temperature continues to drop and the wind speed remains constant, the wind chill factor can become cold enough to cause immediate freezing of exposed meat. That’s why cold weather experts always recommend covering your face, head, neck, hands and ears if you have to venture outdoors during a winter storm. This factor primarily affects human flesh, not most metals or machines.
Frozen toes may require amputation in extreme cases.
Different agencies responsible for official weather information use different formulas to calculate the windchill factor. The easiest way for ordinary people to calculate the wind chill factor on their own is to access an online conversion table provided by official weather services. Air temperature and wind speed can be entered in dialog boxes and approximate cooling factor can be calculated in seconds. There are also graphs available that show the wind chill factor at different temperatures, combined with the estimated exposure times before the risk of frostbite appears.
If one really wants to calculate this factor like the pros do, here is the formula for the Fahrenheit calculations: WC = 0.0817 (3.71 V ^ 0.5 + 5.81 – 0.25 v) (T-91 ,4) +91.4 , where V = wind speed in mph and T = °F. Let’s leave a light on for you.