⚠️ Flood Warning – Boone, IA; Jasper, IA; Marshall, IA; Polk, IA; Story, IA – Saturday, July 4, 2026

Flood Warning issued July 4 at 6:21AM CDT until July 4 at 6:15PM CDT by NWS Des Moines IA

Details

* WHAT…Flooding caused by excessive rainfall is expected.

* WHERE…A portion of central Iowa, including the following
counties, Boone, Jasper, Marshall, Polk and Story.

* WHEN…Until 615 PM CDT Saturday.

* IMPACTS…Flooding of rivers, creeks, streams, and other low-lying
and flood-prone locations is imminent or occurring. Streams
continue to rise due to excess runoff from earlier rainfall.

* ADDITIONAL DETAILS…
– At 619 AM CDT, Doppler radar indicated heavy rain due to
thunderstorms. Flooding is ongoing or expected to begin
shortly in the warned area. As much as 3 and 5 inches of rain
have fallen, with locally higher amounts.
– This areal flood warning replaces the flash flood warnings
that were previously issued for these counties.
– Some locations that will experience flooding include…
Des Moines, Ames, Ankeny, Newton, Altoona, Boone, Pleasant
Hill, Nevada, Carlisle, Bondurant, Story City, Huxley,
Saylorville, Madrid, Mitchellville, Colfax, Prairie City,
Slater, State Center and Roland.

Instructions

For the latest stream observations and forecasts refer to
weather.gov/desmoines/water.

Turn around, don’t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.