Sep 9, 2014
Deep moisture moved into Iowa as a strong shortwave moved into the central U.S. Moisture from former hurricane Norbert moved into the central U.S. as a low pressure system developed over Kansas. The low from Kansas moved northeast into Iowa during the night of the 9th and morning of the 10th. The low was over southwest Wisconsin on the morning of the 10th. The atmosphere was unstable with 1000 to 2000 J/kg of CAPE available. CAPE in the -10 to -30 C layer of the atmosphere was in the 300 to
Source: NOAA National Weather Service Storm Events Database (event 533308). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Union County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.