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These are the snowstorm forecasts for ten cities that will be affected over Christmas week.

An even more powerful cyclone is set to explosively develop over central U.S. and Great Lakes. In the worst of the storm, visibilities may be reduced to near zero. Wind chills as low as minus-40 may promote frostbite in as little as 10 minutes. A winter storm watch is in effect from Thursday morning through Friday afternoon. A wind chill watch is out Thursday afternoon through Saturday morning.

One to three inches of snow is forecast for St Louis. Temperatures will be in the mid-20s by sunset, with an overnight low around zero.