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Flash Flood — Polk, IA

Jun 22, 2019

Strong to severe storms and heavy rainfall moved up into Iowa from northern Missouri during the late afternoon and evening hours of the 22nd of June. Ahead of the storms, a warm front lifted into and through much of the state, bringing with it temperatures into the low to mid 80s and dew points in the low to mid 70s. Support for storms was decent with MUCAPE values of 2000+ J/kg reaching roughly the Interstate 80 corridor, effective bulk shear in the 30 to 40 kt range, and strong low level moist

Source: NOAA National Weather Service Storm Events Database (event 832557). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Polk, IA

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

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