Jun 24, 2018
A weak, occluded surface low pressure system was situated northwest of the area with its associated boundaries draped across western and southern Iowa. The environment south of the warm front/pseudo-stationary front was ripe with MUCAPE in excess of 300 J/kg, but devoid of many other supporting variables. Effective shear was borderline at best around 30 kts and DCAPE and hail CAPE were generally mediocre. Lending some credence to heavy rain, precipitable water values were around 1.7 inches or g
Source: NOAA National Weather Service Storm Events Database (event 763677). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Winnebago County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.