Severe Flood ● Closed
Flood Warning issued October 1 at 6:23AM CDT until October 2 at 7:00PM CDT by NWS Des Moines IA, United States of America
Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.
...The Flood Warning continues for the following rivers in Iowa...
North River near Norwalk Hwy R57 affecting Polk and Warren
Counties.
Thompson River at Davis City affecting Decatur County.
...The Flood Warning is extended for the following rivers in Iowa...
Middle River near Indianola affecting Warren County.
...The Flood Warning is cancelled for the following rivers in Iowa...
South River near Ackworth affecting Warren County.
* WHAT...Minor flooding is forecast.
* WHERE...Thompson River at Davis City, or from the City of Grand
River to the Iowa-Missouri border.
* WHEN...From late tonight to Friday evening.
* IMPACTS...At 12.0 feet, Widespread flooding occurs at the Davis
City park including the campgrounds. Water affects Hwy R15 just
north of the town of Grand River in northwest Decatur County.
* ADDITIONAL DETAILS...
- At 6:00 AM CDT Thursday the stage was 9.5 feet, and rising.
- Forecast...The river is expected to rise above flood stage late
tonight to a crest of 12.1 feet tomorrow morning. It will then
fall below flood stage early tomorrow afternoon.
- Flood stage is 12.0 feet.
Measurements
| Coordinates | 40.6840, -93.8660 |
|---|---|
| Region | Decatur, IA |
| Location Precision | polygon |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Immediate |
| Cap Certainty | Observed |
| Cap Expires | 2026-10-01T18:30:00-05:00 |
Official source
Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
Severity as published by WMO Alert Hub (national weather services).
View original reportAlso reported by: NWS
This event as JSON · API and licence
Source updated 18 days ago (Oct 1, 2026 11:24 UTC) · we last heard from WMO Alert Hub (national weather services) 19 seconds ago
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Satellite view, before and after
The latest clear Sentinel-2 pass before this event and the earliest one after it.
2 Sep 2026, 29 days before this event. 1.1% cloud across the tile.
2 Oct 2026, the day after this event. 0% cloud across the tile.
The white ring marks where the event was reported.
Each image is a preview of a whole Sentinel-2 tile — an area of roughly 110 by 110 km, where one pixel is about 320 metres — not a close-up of the event, which may be a small part of it. "Clear" means under 30% cloud across the entire tile, so the exact place that matters can still be hidden. These are pictures for context, not an assessment of damage.
Contains modified Copernicus Sentinel data 2026, found through the Earth Search catalogue (Element 84) and served from the AWS Open Data Sentinel-2 archive.
Official authorities in United States
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More for United States →What to do
Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.
Flood preparation, evacuation decisions, and the dangers of driving or walking through floodwater.
Open Flood Safety Guide →Earlier flood events in United States
Severe and extreme events of the same kind, before this one. Listed for scale, not because they are connected to it.
Nearby & related events
Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.