How Wind Chill Values are Calculated

by Abel Hampton December 31, 2017, 0:42
How Wind Chill Values are Calculated

A Wind Chill Advisory is now in effect for the Valley for Monday starting at 12 a.m. and last until 11 a.m.

A wind chill advisory is in effect from tonight through Monday, as wind chill values are expected to drop from 15 to 25 below zero after midnight tonight. Low -34. Extreme wind chill -46.

Mostly sunny, with a high near 74.

It's been an unseasonably cold but also a mostly dry pattern since Christmas Day, but snow lovers finally got a little snow to enjoy on Saturday.

McHenry, Lake, DeKalb, Kane, DuPage, Cook, LaSalle, Kendall, Grundy, Livingston, Will, and Kankakee Counties in IL are all under the advisory, as temperatures are expected to barely climb above zero on New Year's Day. With the temperatures headed below zero, local officials say it's important be prepared for any weather-related emergencies. These temperatures will range from the negative single digits southwest to the negative teens elsewhere.

Tonight: Partly cloudy. Wind chills from -10 to -20. The coldest times will be each night and morning from sunset on New Year's Eve through midday Tuesday.

Cover up. Frostbite can develop within minutes on exposed skin, especially with wind chill.

The temperatures will continue to remain low tonight with the National Weather Service issuing a Wind Chill Advisory for all of southeastern MI. Gusty winds have wind chill values running below zero.

Make sure to stay warm and safe in these winter months, and always turn to your First Warn 5 Meteorologists for the latest weather information.

Wed: High: 32 Low: 13 Sunny.

Assumes no impact from the sun, i.e., clear night sky. Hang in there, for a long stretch of incessant cold continues indefinitely.


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