NWS Omaha/Valley NEFF.W 0046September 30, 2026
Flash Flood Warning: Harrison, Pottawattamie, Shelby and 2 more, IA and NE
The National Weather Service office in Omaha/Valley issued a flash flood warning for Harrison, Pottawattamie, Shelby and 2 more in Iowa, Nebraska, which was in force until 2:15 a.m. local time on October 1. It was the 46th flash flood warning the NWS office in Omaha/Valley issued in 2026. Iowa had 17 flash flood warnings in September 2026, against 9 in an average September of 2008-2025 (Iowa's flash flood warnings by year).
ExpiredWarning
In force for 3.1 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Omaha/Valley NE
- Area
- Harrison, Pottawattamie, Shelby and 2 more
- State
- Iowa
- Level
- Warning
- Issued
- 11:11 p.m. CDT, September 30, 2026
- Expires
- 2:15 a.m. CDT, October 1, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KOAX FF.W 0046
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
FFWOAX The National Weather Service in Omaha/Valley has issued a * Flash Flood Warning for... Southern Harrison County in southwestern Iowa... Northwestern Pottawattamie County in southwestern Iowa... Southwestern Shelby County in southwestern Iowa... North Central Douglas County in east central Nebraska... Southeastern Washington County in east central Nebraska... * Until 215 AM CDT. * At 1111 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 4 inches of rain have fallen. The expected rainfall rate is 1.5 to 3 inches in 1 hour. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Blair, Harlan, Missouri Valley, Logan, Woodbine, Underwood, Fort Calhoun, Neola, Shelby, Minden, Earling, Kennard, Persia, Modale, Panama, Magnolia, Portsmouth and Washington. This includes the following highways... Interstate 29 between mile markers 66 and 82. Interstate 80 in Iowa between mile markers 20 and 40.
What the agency told people to do
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.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.