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Flash Flood — Cass, IA

Aug 7, 1999

An east to west warm front was poised along the southern Iowa border as a weak surface wave advanced east along the frontal boundary. Low level winds increased to nearly 40 kts during the night, transporting moist and unstable air over the frontal boundary. Surface dew point temperatures were in the low to mid 70s south of the front with precipitable water values near 50 mm. Upper level winds were fairly strong from the west. An MCS formed during the previous night and advanced across Nebras

Source: NOAA National Weather Service Storm Events Database (event 5712050). 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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