Minneapolis – The upper Midwest was in the deep freeze Tuesday, with the arctic air expected to shift eastward and affect millions of people including New York city as the week wears on.
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The National Weather Service posted advisories for the Dakotas and Minnesota on Tuesday, with wind chills from 10 to 20 below zero. Wind chill is the combination of air temperature and wind, and forecasters say wind chills this cold can cause frostbite to exposed skin in as little as 30 minutes.
The cold will affect parts of the northern and eastern U.S. later this week and into the weekend, with frigid temperatures expected in the Great Lakes, Mid-Atlantic and Northeast regions, according to Climate Prediction Center forecaster Stephen Baxter.
Below-normal temperatures are expected this weekend and into Monday across the entire northern half of the country, from the Pacific Northwest to Maine and as far south as Oklahoma, Arkansas and Virginia, according to the Climate Prediction Center.
The cold was expected to hit NYC by Wednesday night — bringing with it “extremely cold temperatures and low wind chills” that could take us into the subzero zone and coat city streets in snow and/or ice.
Windy conditions will contribute to wind chill values averaging around 10 above late Wednesday night and Thursday across NYC, and plummeting to around zero in the city Thursday night,” the NWS was predicting as of Tuesday morning.
Up to half a foot of snow also could fall from the Upper Mississippi Valley to the Northeast on Friday and Saturday, and areas east of the Appalachian Mountains could see freezing rain and sleet on Saturday.
Another arctic air mass on the heels of this cold front is expected to bring temperatures to the northern Plains over the weekend and into early next week that will be as much as 24 degrees below normal, according to Baxter.