Wind chill could reach zero degrees Friday night, perhaps even colder

How low can it go?

That's the question.

During the day on Friday, the temperature is expected to drop at an accelerated rate, and by Friday night and early Saturday morning the results could be dangerous and potentially life-threatening.

Based on Friday night's projected temperature and wind speeds, the wind chill in this part of Georgia literally could reach zero, with an outside chance of crossing into negative numbers.

So, what all is needed to achieve a wind chill of zero and/or a negative number? Well, based on the National Weather Service's wind chill formula, the one that's been in place since 2001, a temperature of 15 degrees and a wind speed of 15 miles per hour equal zero, in terms of the wind chill factor.

If the temperature gets any cooler than that and the wind blows any harder than that, the wind chill then crosses over into the negative numbers.

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