Flash Flood Warning
Flash Flood Warning · Black Hawk, IA; Grundy, IA; Marshall, IA; Tama, IA
Last updated · source: NOAA / National Weather Service
This event is no longer active — it's kept here as a record. Recovery may still be underway; the guidance below applies.
Flash Flood Warning issued July 2 at 6:58PM CDT until July 3 at 1:00AM CDT by NWS Des Moines IA
This is a severe-significance flash flood warning event affecting Black Hawk, IA; Grundy, IA; Marshall, IA; Tama, IA, tracked from official feeds (NOAA / National Weather Service). We update this page as the situation develops.
- Type
- Flash Flood Warning
- Area
- Black Hawk, IA; Grundy, IA; Marshall, IA; Tama, IA
- Began
- 2026-07-02 23:58 UTC
- Expected end
- 2026-07-03 06:00 UTC
Possible damage: watermold
Affected by this event? Open your area's damage guides below to reach a vetted local restoration pro, 24/7.
Affected areas & guides
Every area named for this event, per the official source. Open yours for damage guides — what to do first, and how to reach a vetted restoration pro, 24/7.
Black Hawk, IA
Grundy, IA
Marshall, IA
Tama, IA
Affected area map
The shaded area is the affected-area perimeter reported for this event by NOAA / National Weather Service (Black Hawk, IA; Grundy, IA; Marshall, IA; Tama, IA), colored by its significance. Pan and zoom to explore the map; when more than one observation exists, use the slider below to step through how the reported area changed.
Shown as reported by our sources — not an official product. For current advisories and the authoritative map, see NOAA / National Weather Service ↗.
Latest updates
Official updates and news coverage for this event, newest first — National Weather Service products, local storm reports, incident updates and press headlines. Official items are verbatim government text; news headlines link out to the original outlet.
- Storm report NWS DMX storm report
FLOOD — 2 ESE Alleman, IA
Northeast 22nd flooded between Ankeny and Alleman. Time estimated from report information.
- Storm report NWS DMX storm report
FLOOD — 3 SE Alleman, IA
I-35 southbound exit ramp to NE 126th Avenue East is flooded.
- Storm report NWS DMX storm report
FLASH FLOOD — 3 WSW Elkhart, IA
Iowa DOT is closing I-35 northbound from mile marker 94 to 97. The water is 6-12 inches deep with some reports as high as waist deep.
- Storm report NWS DMX storm report
FLASH FLOOD — 1 ESE Morrison, IA
Water flowing over the road near IA 175 and T Avenue. Water still rising.
Updates are captured automatically from official and news sources, and may lag the live source. For the very latest, see NOAA / National Weather Service ↗.