⚠️ Flash Flood Warning – Marshall, IA; Story, IA – Saturday, July 4, 2026

Flash Flood Warning issued July 4 at 12:41AM CDT until July 4 at 6:30AM CDT by NWS Des Moines IA

Details

FFWDMX

The National Weather Service in Des Moines has issued a

* Flash Flood Warning for…
Southwestern Marshall County in central Iowa…
Central Story County in central Iowa…

* Until 630 AM CDT.

* At 1241 AM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
1 and 2.5 inches of rain have already fallen. Additional rainfall
amounts of 1 to 2 inches are possible in the warned area as more
storms move over the area early this morning. Flash flooding is
ongoing or expected to begin shortly.

HAZARD…Flash flooding caused by thunderstorms.

SOURCE…Radar and automated gauges.

IMPACT…Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include…
Ames, Nevada, State Center, Gilbert, Iowa State Center, Colo,
Melbourne, Rhodes, Clemons, St. Anthony and Ames Municipal Airport.

Instructions

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

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.