You’ve probably heard the term “polar vortex” a lot this winter. But what is it exactly?
Imagine a “whirlpool” of cold air that sits high above the Arctic. That is the polar vortex. It’s not a snowstorm by itself. Instead, it’s a large area of low pressure and cold air that circles the North Pole.
It exists all the time, but it usually gets stronger in winter. When the jet stream (a river of wind) bends and dips south, the edge of the polar vortex can wobble or stretch. That can let Arctic air slide into the United States and Canada and bring a short spell of extreme cold.
For Detroit, the polar vortex will bring the coldest air we have seen in years.
Starting Friday morning, our wind chills will be as low as 15 below zero or colder and stay below zero through Sunday. This means you should plan for more than just discomfort.
When temperatures are this low, frostbite and hypothermia become real risks, especially if the wind picks up.
Dress in layers, wear a hat and gloves, and cover exposed skin if you have to be outside.
If the kids are begging to ski, sled or snowboard this weekend, just make sure to limit the amount of time spent outside. Oh, and throw in the risk of frozen pipes as well.
You know I always like to end on a bright note: Spring is just 57 days away!