Jul 14, 2021
A surface low pressure system was centered over Kansas and Nebraska with attendant warm front draped across north central Iowa. This was bisected by an outflow boundary from morning convection across western Iowa. As morning activity exited the are the atmosphere quickly recovered steep low and mid level lapse rates exceeded 8 C/km with 0-6 km shear over 40 knots. Near the remnant outflow boundary 0-1 km SRH exceeded 150 m2/s2. Storms developed along this boundary and moved east along the warm f
Source: NOAA National Weather Service Storm Events Database (event 971425). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Story County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.