South winds ahead of an approaching cold front pulled unseasonably warm air into southern Wisconsin Tuesday afternoon. Temperatures peaked in the low to mid 60s over most of southern Wisconsin. Milwaukee reached 63 degrees, which was just one degree off the record high of 64 degrees for March 6th, set in 1983. Madison reached 65 degrees, which was 4 degrees off the record high of 69 degrees, set in 2000.
Clouds and breezy south winds kept temperatures mild overnight. Despite the clouds hanging around today, temperatures are expected to reach the 60s once again. A cold front over Minnesota and western Iowa is expected to sweep through southern Wisconsin late this afternoon and evening. This front will bring a period of rain tonight, and cooler temperatures for Thursday. However temperatures are expected to remain above normal on Thursday.
The warm temperatures on Tuesday melted most of the snow that covered southern Wisconsin. Below is an animation from the GOES Visible satellite that shows the snowfield receding quickly across Wisconsin and Illinois on Tuesday.
Notice the big difference between the above graphic and the below graphic depicting snow cover from Tuesday morning. Most of southern Wisconsin lost the 2 to 8 inch snow cover that blanketed the region. What remained of the snowfield around Sheboygan, Lomiara,Fond du Lac and West Bend should succumb to the warm temperatures today.
The modeled snow depth is available on the interactive maps page of the National Operational Hydrologic Remote Sensing Center.