Feb 20, 2018
A slow release of a snow pack, containing one to over two inches of water, occurred in the days leading to the event which started the process of river rises in many areas. Low pressure tracked from northwest Iowa into northern Lower Michigan, which ushered in a rapid warmup and equally rapid release of any remaining water in the snow-pack. Several rounds of rain occurred between the 19th and 21st of February across the region, fed by record high precipitable water levels (by February standards)
Source: NOAA National Weather Service Storm Events Database (event 742450). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in St. Joseph County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.