UPDATE: 5:47pm CST.
Here is a probability map of 0.01 inches of freezing drizzle accumulating during the calendar day (midnight to midnight) Friday. Disregard the little minima east of Wichita.
I suggest that those in the blue-orange-red areas plan to allow extra time driving.
A winter storm of moderate intensity will bring snow to a stripe from the Rockies to the Midwest.
Spotty freezing drizzle may cause patchy slick roads in a large area later tonight and Friday.
There is another, likely stronger, winter storm behind this one. We'll likely start coverage on the blog tomorrow.