- Only cold wind can never make an object colder than the air temperature.
- The Weather Service began including wind chill in their forecasts in the early 1970s.
- When the wind is cold at about 40 degrees below zero, open skin can freeze within 10 minutes.
As temperatures plummet and winds howl this winter, you’ll hear about the dangers of “cold wind”. So what is the measurement?
Wind chill temperatures are how people (and animals) feel cold outside. Wind chill is based on the rate of heat loss from the exposed skin due to the combination of wind and cold National Weather Service.
As the wind rises, it draws heat away from the body, lowering the skin temperature and ultimately the body temperature.
“That’s what it feels like when you’re out in the cold with the wind blowing,” said Bob Oravec, a principal forecaster for the Weather Service at the Weather Prediction Center. General Science.
What do the wind chill numbers mean?
The wind therefore makes it feel much colder than it really is, so it is described as a “feeling-like” number. If the temperature is 0 degrees and the wind is blowing at 15 mph, the wind chill is 19 degrees below zero.
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The low amount of cold wind won’t stop you from going outside; However, they should encourage you to dress modestly. For example, when the wind is cold at about 40 degrees below zero, open skin can freeze within 10 minutes.
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How long can you stay in the cold wind?
Remember that wind chill temperature is not some sort of temperature difference: Only wind chill can never make an object colder than air temperature. Even with a wind chill of 10 degrees, you won’t get frostbite or freeze your car’s radiator if the air temperature is 32 degrees or higher.
The weather service began including cold winds in their forecasts in the early 1970s, several decades after Antarctic explorers first published research on it in the late 1930s.
The weather agencies of the United States and Canada revised the wind chill index in 2001, based on more scientific knowledge and based on experiments that tested the rate of cooling of the faces of volunteers. in a wind tunnel with various wind and temperature combinations.
How is cold wind generated?
Here’s a chart from the Weather Service to find out how cold the wind is, based on a formula that combines the current temperature with the current wind speed: