NWS Des Moines IAFL.W 0021September 15, 2026
Flood Warning: Dallas and Polk, IA
The National Weather Service office in Des Moines issued a flood warning for Dallas and Polk in Iowa, which was in force until 10:00 p.m. local time on September 15. It was the 21st river flood warning the NWS office in Des Moines issued in 2026. Iowa had 29 flood warnings in September 2026, against 18 in an average September of 2008-2025 (Iowa's flood warnings by year).
ExpiredWarning
In force for 7.3 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Des Moines IA
- Area
- Dallas and Polk
- State
- Iowa
- Level
- Warning
- Issued
- 2:13 p.m. CDT, September 15, 2026
- In force from
- 2:45 p.m. CDT, September 15, 2026
- Expires
- 10:00 p.m. CDT, September 15, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Expected
- VTEC event
- KDMX FL.W 0021
- 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
...The National Weather Service in Des Moines has issued a Flood Warning for the following rivers in Iowa... Walnut Creek at Clive I-80/35 affecting Dallas and Polk Counties. * WHAT...Minor flooding is forecast. * WHERE...Walnut Creek at Clive I-80/35, or from Little Walnut Creek to the North Walnut Creek. * WHEN...Until this evening. * IMPACTS...At 9.0 feet, Swanson Blvd is closed from Harbach Blvd west to NW 94th St due to storm sewer backup. The intersection of 93rd St and Lincoln St is closed also due to storm sewer backup. * ADDITIONAL DETAILS... - At 1:58 PM CDT Tuesday the stage was 8.9 feet, and rising. - Forecast...The river is expected to rise above flood stage this afternoon to a crest of 9.1 feet late this afternoon. It will then fall below flood stage late this afternoon. - Flood stage is 9.0 feet.
What the agency told people to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. For the latest stream observations and forecasts refer to weather.gov/desmoines/water. River forecasts include observed precipitation plus forecast precipitation over the next 24 hours.
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.