Jul 10, 2000
A major flash flood event began during the evening hours of July 9, as a large mesoscale convective system developed over northern Iowa and moved slowly southeast. The event was well anticipated by the NWS, as a Flood Potential Statement for the Cedar River Basin and Flash Flood Watch were issued around noon on the 9th. The watch covered the northern one half of Iowa. Ingredients in place over this area included a very moist and unstable airmass, a nearly stationary frontal boundary, a strong
Source: NOAA National Weather Service Storm Events Database (event 5151889). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Grundy County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.