Flash Flood Warning — Harrison County, Iowa
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Current Status
🌊 Active: Flash Flood Warning
Flash Flood Warning issued September 9 at 2:30AM CDT until September 9 at 7:30AM CDT by NWS Omaha/Valley NE
FFWOAX The National Weather Service in Omaha/Valley has issued a * Flash Flood Warning for... Southern Harrison County in southwestern Iowa... Northwestern Mills County in southwestern Iowa... Pottawattamie County in southwestern Iowa... Southern Shelby County in southwestern Iowa... Southeastern Dodge County in east central Nebraska... Douglas County in east central Nebraska... Sarpy County in east central Nebraska... Eastern Saunders County in east central Nebraska... Southeastern Washington County in east central Nebraska... * Until 730 AM CDT. * At 230 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. 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 strea
Effective September 9, 2026 at 3:30 AM ET · Expires September 9, 2026 at 8:30 AM ET
Event Details
Event Type
Flash Flood Warning
Severity
severe
Issued By
NWS Omaha/Valley NE
Expires
September 9, 2026 at 8:30 AM ET
Last Checked
2 hours ago
What To Do
📋 Official NWS Guidance
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding.
Also In Effect For
This same Flash Flood Warning also covers:
Other Active Alerts in Iowa
Flood Warning
Flood Warning
Flash Flood Warning
Flash Flood Warning
Flash Flood Warning
Flash Flood Warning
Get Flash Flood Warning Alerts for Harrison County
StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
Frequently Asked Questions
What does a Flash Flood Warning mean for Harrison County, Iowa?
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Is this Flash Flood Warning currently active?
Yes — this alert is active as of our last check (2 hours ago). It's set to expire September 9, 2026 at 8:30 AM ET.
How do I get notified about Flash Flood Warning alerts for Harrison County?
Download StormCast free on Google Play and set Harrison County, Iowa as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Flash Flood Warning is also in effect for Pottawattamie County, Saunders County, Mills County, Shelby County, Washington County, Sarpy County.