National Weather Service United States Department of Commerce

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Overview

This page provides a meteorological overview of the March 12, 2022 significant snow event that dumped several inches of snow across most of the area, even in the lower elevations. This was a very unusual late-season event and was the most significant widespread March winter event in the region since the '93 Blizzard/Storm of the Century. This event also produced the most single-day snowfall at the Knoxville climate site (6.5") since the 1993 storm as well. The combination of high snowfall rates and strong winds did lead to scattered power outages, in addition to difficult travel. Thundersnow also occurred in portions of the Central and Southern Valley as a result of the very strong lift and sufficient instability. 

 

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