Severe Flood ● Closed
Flood Watch issued September 14 at 10:52PM CDT until September 15 at 7:00PM CDT by NWS Omaha/Valley NE, 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.
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of southwest Iowa, including the following
counties, Fremont, Mills, Montgomery, Page and Pottawattamie and
Nebraska, including the following counties, Cass, Douglas, Gage,
Johnson, Lancaster, Nemaha, Otoe, Pawnee, Richardson and Sarpy.
* WHEN...Through Tuesday evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS...
- Recent heavy rainfall combined with potential for repeated rounds
of thunderstorms this evening and overnight will lead to a flash
flooding threat through at least Tuesday morning. Additional
rounds of rainfall will be possible through the remainder of the
week. If confidence increases in potential for heavy rain Tuesday
night into Wednesday, part or all of the watch may need to be
extended.
- http://www.weather.gov/safety/flood
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Pottawattamie; Mills; Montgomery; Fremont; Page; Douglas; Sarpy; Lancaster; Cass; Otoe; Gage; Johnson; Nemaha; Pawnee; Richardson |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Future |
| Cap Certainty | Possible |
| Cap Expires | 2026-09-15T19:00:00-05:00 |
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: WMO
This event as JSON · API and licence
Source updated 34 days ago (Sep 15, 2026 03:53 UTC) · we last heard from WMO Alert Hub (national weather services) 44 seconds ago
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About this location
The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.
Area as the agency stated it: Pottawattamie; Mills; Montgomery; Fremont; Page; Douglas; Sarpy; Lancaster; Cass; Otoe; Gage; Johnson; Nemaha; Pawnee; Richardson
Official authorities in United States
If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.
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.