Jul 11, 2017
Slow moving thunderstorms developed over northeast Iowa during the evening of July 11th. All of the severe weather occurred in Clayton County. Golf ball sized hail fell near Garber, power poles were blown down in Elkader and residents were evacuated near Osterdock because of flash flooding along the Little Turkey River and Mill Creek.
Source: NOAA National Weather Service Storm Events Database (event 708331). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Clayton County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.