NWS Omaha/Valley NETO.W 0022May 17, 2026
Tornado Warning: Mills and Cass, IA and NE
The National Weather Service office in Omaha/Valley issued a tornado warning for Mills and Cass in Iowa, Nebraska, which was in force until 9:15 p.m. local time on May 17. It was the 22nd tornado warning the NWS office in Omaha/Valley issued in 2026. Iowa had 40 tornado warnings in May 2026, against 20 in an average May of 2008-2025 (Iowa's tornado warnings by year).
ExpiredWarning
In force for 29 minutes; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Omaha/Valley NE
- Area
- Mills and Cass
- State
- Iowa
- Level
- Warning
- Issued
- 8:46 p.m. CDT, May 17, 2026
- Expires
- 9:15 p.m. CDT, May 17, 2026
- CAP severity, certainty, urgency
- Extreme, Observed, Immediate
- VTEC event
- KOAX TO.W 0022
- Official source
- National Weather Service: the notice at its source
Tornado Warnings in Iowa since 2008Every warning type in Iowa
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
TOROAX The National Weather Service in Omaha has issued a * Tornado Warning for... Northwestern Mills County in southwestern Iowa... Northeastern Cass County in southeastern Nebraska... * Until 915 PM CDT. * At 846 PM CDT, a severe thunderstorm capable of producing a tornado was located over Plattsmouth, or 8 miles south of Offutt AFB, moving northeast at 50 mph. HAZARD...Tornado and quarter size hail. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely. * This dangerous storm will be near... Plattsmouth, Glenwood, and Pacific Junction around 850 PM CDT. Silver City around 900 PM CDT. This includes Interstate 29 between mile markers 32 and 37.
What the agency told people to do
TAKE COVER NOW! Move to a basement or an interior room on the lowest floor of a sturdy building. Avoid windows. If you are outdoors, in a mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris.
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.