The same low pressure system that produced a major blizzard over the central/southern Plains on March 26-28th that produced up to 28 inches of snow in south central Kansas, tracked northeast from southeast Missouri to southeast Lower Michigan overnight on March 28th and during the morning of the 29th. After a mix of snow, sleet, and freezing rain over portions of southern Wisconsin during the evening of the 28th, precipitation turned to all snow by the early morning hours of the 29th. Dozens of accidents were reported around the interstate system during the onset of the precipitation.
Forecasted snow amounts before the event were in the 6-12 inch range over southeast Wisconsin, but because the storm tracked a tad further to the southeast than models had indicated, the heaviest snow was confined to the southeast corner of the state...near Racine and Kenosha. Snow totals there ranged from 6 to 8.5 inches with a general 2 to 4 inches over the remainder of southern Wisconsin. In addition, while the heaviest precipitation fell over southern Wisconsin, areas along I-94 from Sullivan to Waukesha remained sleet well into the evening hours on the 28th. Between 1/2 inch and 1 inch of sleet fell there. If that had been snow, locations in this area would have recieved 3 to 5 inches more of snow.
Trained spotters called in thundersnow reports around 6 am near the city of Racine. Winds gusted in excess of 40 mph near Lake Michigan, making for near blizzard conditions at times.
Below is a map showing the snowfall amounts as reported by coop observers. The map shows totals as of 7 am, but snow continued through late morning, likely producing another 1-2 inches in some places.
Below is a list of the higher reports submitted by coop observers and storm spotters.
INCHES LOCATION ST COUNTY TIME ------ ----------------------- -- -------------- ------- 8.30 2 NE STURTEVANT WI RACINE 1150 AM 8.00 1 S ROCHESTER WI RACINE 1016 AM 7.00 PADDOCK LAKE WI KENOSHA 0639 AM SNOWFALL OF 7.0 INCHES WITH 1.50 INCHES LIQUID /NOT ALL FROM SNOW/. 6.50 CALEDONIA WI RACINE 0700 AM 6.30 4 SW KENOSHA WI KENOSHA 0700 AM SNOWFALL OF 6.3 INCHES WITH 1.24 INCHES OF LIQUID /NOT ALL FROM SNOW/. 6.00 RACINE WI RACINE 0700 AM SNOWFALL OF 6.0 INCHES AND 1.77 INCHES OF LIQUID /NOT ALL FROM SNOW/. 6.00 UNION GROVE WI RACINE 0700 AM 6.00 2 NW FRANKLIN WI MILWAUKEE 0700 AM 5.10 1 SW MILWAUKEE INTERNAT WI MILWAUKEE 1135 AM COLLEGE AND 13TH. 5.00 MILWAUKEE INTERNATIONAL WI MILWAUKEE 0100 PM 5.00 BURLINGTON WI RACINE 0700 AM 4.20 WEST ALLIS WI MILWAUKEE 0700 AM 4.10 2 NE DARLINGTON WI LAFAYETTE 0700 AM 3.30 NWS SULLIVAN/MILWAUKEE WI JEFFERSON 0100 PM 3.30 1 N WATERTOWN WI DODGE 1105 AM 3.30 3 SE PALMYRA WI JEFFERSON 0820 AM 3.0 INCHES OF SNOW WITH 0.3 INCH OF SLEET AND 0.1 INCH OF ICE. TOTAL LIQUID EQUIVALENT OF 0.41 INCH. 3.20 2 NE MADISON WI DANE 0100 PM 3.00 2 NE GLENDALE WI MILWAUKEE 1159 AM 3.00 OREGON WI DANE 0900 AM 3.00 JACKSON WI WASHINGTON 0630 AM SNOWFALL ACCUMULATION OF 3 INCHES WITH 1/10 INCH OF ICE. SNOW AND FREEZING RAIN CURRENTLY FALLING.