May 20, 2014
A cold front moved slowly south into the state during the day on the 20th. The flow was quite light with overall weak dynamics associated with the system. The atmosphere became unstable by afternoon with around 2000 J/kg of CAPE available. The downdraft CAPE was quite high in the 900 to 1200 J/kg range. CAPE in the -10 to -30 C layer of the atmosphere was between 300 and 600 J/kg. Precipitable water was around 1.3 inches, with a freezing level in the 13,000 to 13,500 foot level. Thundersto
Source: NOAA National Weather Service Storm Events Database (event 507560). 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.