Feb 19, 2018
After a snowy early February, northwest Illinois experienced both a heavy rain event and extensive snowmelt on February 19th. The ground was frozen, which allowed for widespread creek flooding and areal flooding in Stephenson County. The flooding flowed most significantly through Yellow Creek and the Pecatonica River. The towns of Freeport, Pearl City, Winslow, and McConnell were impacted during this event.
Source: NOAA National Weather Service Storm Events Database (event 739061). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Stephenson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.