At a Glance

A swath of heavy snow blanketed parts of the Upper Midwest on April 17-18.Parts of Iowa and Minnesota picked up a foot of snow.In southern Wisconsin, this was a rare heavy snowfall so late in the spring.

Another round of April snow buried parts of the winter-weary Upper Midwest with up to a foot of snow, just days after a winter storm produced over two feet of snow in parts of the Great Lakes.

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A compact area of low pressureand its associated upper-level disturbance, interactedwith just-enough lingering cold air to produce an area of snow from the Dakotas and northern Nebraska into the western Great Lakes on April 17-18.

Estimated snowfall over a 48-hour period ending 7 a.m. CDT, April 19, 2018. The Upper Midwest snow event is highlighted by the yellow and orange contours near the top center of the map.

(NOAA/NOHRSC)

The heaviest snow fell in a roughly west-to-east swath from southeast South Dakota and northeast Nebraska into southern Wisconsin.

Several towns near the Minnesota-Iowa border picked up a foot of snow, lead by Stacyville, Iowa, with 12.8 inches.

Sioux Falls, South Dakota, picked up 6.2 inches of snow just four days after dumped the city's heaviest April calendar-day snowfall on record.

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in Wayne, Nebraska, near Clare, Iowa, and lightning accompanied freezing rain in Paton, Iowa, early Wednesday morning.

at the National Weather Service office near Des Moines, Iowa,Wednesday morning.

If that wasn't interesting enough, early Wednesday morning between Mason City and Waterloo, Iowa.

Accumulated freezing rain and hail led to treacherous roads in Black Hawk County, Iowa, including the cities of Waterloo and Cedar Falls, according to KWWL-TV.

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Snowfall from this system and pushed both Mason City and Waterloo, Iowa, to .

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In Wisconsin, 10 inches of snow was reported in DeSoto, along the Mississippi Riversouth of La Crosse. The towns of Baraboo, Viroqua, and La Farge each measured 9 inches of snow.

Madison, Wisconsin, saw in records dating to 1939. Amazingly, that vaulted .

were observed in Milwaukee during the afternoon rush on April 18 as heavy snow pushed into southeastern Wisconsin.

Milwaukee's April 18 snowfall in 80 years of records at the site of Mitchell International Airport.