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Either way, it's still freaking cold
January 27, 2014 - Ron Deuter
Wind chill is a measure of the cooling effect of wind. Wind increases the rate at which a body loses heat, so the air on a windy day feels cooler than the temperature indicated by a thermometer.
Forecaster’s predict wind chills in this area could approach 45 degrees below zero during at times during the next couple of days.
That sure is cold, but prior to 2001, it would have sounded even colder. That’s because the formula used to come up with a wind chill value was changed in the United States beginning Nov. 1 2001.
For example, let’s say the air temperature is minus 10 degrees with a wind of 30 mph. Based on the current formula, those conditions would result in a windchill of minus 39 degrees.
According to the old chart, those same conditions would register minus 64 degrees.
Here’s a link that can calculate both the old and new windchill.
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