Alert USA
weather NWS severe Black Hawk, IA; Grundy, IA; Marshall, IA; Tama, IA July 2, 2026 at 11:58 PM

Flash Flood Warning

FFWDMX

The National Weather Service in Des Moines has issued a

* Flash Flood Warning for... Southern Grundy County in central Iowa... North Central Marshall County in central Iowa... Northwestern Tama County in central Iowa... Southwestern Black Hawk County in northeastern Iowa...

* Until 100 AM CDT Friday.

* At 658 PM CDT, Emergency management reported thunderstorms producing heavy rain across the warned area, with several small creeks out of their banks. Between 2 and 4 inches of rain have

Flooding in Black Hawk, IA; Grundy, IA; Marshall, IA; Tama, IA can cut off roads with little warning, damage homes near low-lying areas, and disrupt power and water service. Even a few inches of moving water can carry away a vehicle.

This report is based on information from NWS, monitored by Alert USA's verified emergency feed.

Alert USA anticipates a high chance of travel disruptions, elevated property risk in low-lying areas, and possible power outages while the event is active.

Recommended steps: avoid flooded roads — turn around, don't drown; move to higher ground if you are in a low-lying area; charge phones and prepare for power loss; check on family and neighbors.

Alert USA is tracking this flood event and will update this report as verified information becomes available.

Verified by Alert USA • NWS

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