Posted at 6:35 AM on December 24, 2012
by Craig Edwards
A dusting of snow is likely in the Twin Cities, central Minnesota and west central Wisconsin this morning, but the light snowfall will diminish as the morning progresses.
In the wake of the light snow, arctic air will settle over the upper Midwest.
A wind chill advisory in in effect for a large part of Minnesota and the eastern Dakotas tonight and Christmas morning. Wind chill readings are expected to register colder than 25 below zero.
Christmas Day will be cold, but travel problems due to icy roads should be confined to side streets. I can attest to the slick, ice covered secondary roads in Wisconsin from traveling back from Chicago on Sunday. While the interstate was clear, once you venture off the main highway, you'll fine plenty of snowcover, especially from the Dells to Janesville, Wis.
To refresh your memory, the National Weather Service modified the wind chill formula more than ten years ago. Here's the "new" wind chill chart.
Here's the chart I grew up with. I not-so-fondly recall the wind chill of about 55 below zero on this date in 1983.
You can learn more about the wind chill formula by clicking here.
When heading out to church services or to visit with family and friends, be sure to dress accordingly. Fashion is secondary. High temperatures will be in the single digits on Christmas Day.