National Weather Service United States Department of Commerce

Frigid Airmass to Bring Significantly Colder Temperatures; Snow Continues Downwind of the Great Lakes

A frigid cold airmass will bring significantly colder weather across the eastern two thirds of the country early this week. Record low temperatures are expected in the Southeast by Tuesday morning. Moderate to heavy lake effect snow will continue downwind of the Great Lakes through Monday. Several inches of snow accumulation is expected, including in portions of the Chicago Metro Read More >

The National Weather Service in Milwaukee/Sullivan will be conducting a survey of the southern Washington County area on Thursday.  Radar and spotter reports confirm a likely tornado touchdown in the area between Monches in far northern Waukesha County to the Hubertus area.  

Minor structural damage and tree damage was reported in the vicinity. 

The below image depicts the Milwaukee/Sullivan radar imagery at 4:53 pm.  The reflectivity is on the left and the likely tornadoes circulation is on the right. The circulation measured on radar was about 1300 ft above the ground.  This was about the time a Tornado Warning was issued for southern Washington County. 

radar imagery

Check back for more details later Thursday, after the survey.