December 9th Snowfall Wrap-Up Southeast Wisconsin

December 9th Wrap Up

The first significant snowfall of the season arrived across much of southern Wisconsin.  A complex low pressure system brought accumulating snow to much of south central Wisconsin and a portion of southeast Wisconsin. Two to four inches of snowfall fell northwest of a line from New Glarus to Watertown to Plymouth in southern Wisconsin.  Predominantly rain/snow mix to rain fell in far southeast Wisconsin, specifically near the areas of Delavan, Janesville, Racine, Kenosha, and downtown Milwaukee. Wherein, little to no snow accumulated in far southeast Wisconsin.

Official NWS snowfall reports ending at 6 AM AM CST December 9th, 2012 to 6 AM CST December 10th:   


24-hr Snowfall Amount

Milwaukee Mitchell International Airport:


Madison Airport - Truax Field:

3.8 inches

NWS Milwaukee/Sullivan Office:

0.3 inches

The graphic below is a snow depth map dervied from the National Operational Hydrologic Remote Sensing Center Snow Model (analysis comprised from a combination of ground-based and remote sensing observations) at 12:00 am CST on December 10th, 2012.

The two images below show the 24 hour snowfall total from 7 AM CST December 9th, 2012 to 7 AM CST December 10th for Wisconsin and southcentral/southeast Wisconsin.

Data for the two above graphics were collected from various sources including utility companies, CO-OP weather observers, and the Badger Ham Radio Weather Net. Note that in these images some smoothing is present due to how the analyses were made. 

National Weather Service Milwaukee/Sullivan, WI Weather Forecast Office

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