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Flash Flood — Cass, IA

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 543283). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Cass, IA

This event is one of many recorded floods in Cass County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

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More Flood Stories

Flash Flood$50K damage

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The setup over Iowa was primed for a heavy rainfall event for a few reasons, including persistent SW 500 mb flow, a strong and SW oriented 850 mb jet, strong low level moisture transport, and elevated CAPE around 1000-2000 J/kg.

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Flash Flood$20K damage

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The setup over Iowa was primed for a heavy rainfall event for a few reasons, including persistent SW 500 mb flow, a strong and SW oriented 850 mb jet, strong low level moisture transport, and elevated CAPE around 1000-2000 J/kg.

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Flash Flood

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