May 28, 2020
An upper-level system over the Ozarks lifted north and interacted with a northern stream shortwave moving across the area, amplifying forcing. High precipitable water values of nearly two inches were in place. While the system was somewhat progressive in nature, an area of enhanced reflectivity set up over east-central to northeast Iowa, resulting in prolonged heavy rain in the area.
Source: NOAA National Weather Service Storm Events Database (event 890982). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Bremer County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.