Forecast of Weekend Snow

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NWS watches and warnings:
Pink: winter storm warning
Gold: high wind warning
Violet (South Dakota): ice storm warning 
Magenta: wildfire warning 
Green: winter storm watch
Purple: winter weather advisory
Deep blue: extreme cold warning
Pale blue: extreme cold watch

Here is a forecast for the weekend stripe of snow from the Northern Rockies to the Midwest
I believe the south side of this forecast could still be as much as 20-25 miles too far north so it is possible Omaha, St. Louis and Carbondale may receive a little more than what the graphic shows.  

Below is the forecast radar for 7am Saturday.

Finally, the coldest forecast wind chill.

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