A Wind Chill Watch is now an Extreme Cold Watch. It will be issued when dangerously cold air, with or without wind, is possible. You should adjust plans to avoid being outside during the coldest parts of the day and make sure you have at least half a tank of gas and an updated winter survival kit.

A Wind Chill Warning is now an Extreme Cold Warning. It will be issued when dangerously cold air, with or without wind, is expected. You should avoid going outside, but if you must, you should dress in layers, cover exposed skin and make sure at least one person knows where you are going and when you arrive at your destination.

Here is why there won’t be any wind chill warnings this winter in the US (kptv.com)