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Flood Warning — Polk County, IA, Story County, IA
Flood Warning
Issued
4:51 AM CDT · Sat, Jul 4 2026
Expires
2:51 PM CDT · Sun, Jul 5 2026
Issuing Office
NWS KDMX

Affected Areas

Polk County, IA Story County, IA

Official Bulletin

181
WGUS43 KDMX 040951
FLWDMX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Des Moines IA
451 AM CDT Sat Jul 4 2026

...The National Weather Service in Des Moines IA has issued a Flood
Warning for the following rivers in Iowa...

  South Skunk River near Ames US 30 affecting Polk and Story
  Counties.

  Ioway Creek at Ames Lincoln Way affecting Story County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For the latest stream observations and forecasts refer to
weather.gov/desmoines/water.

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

River forecasts include observed precipitation plus forecast
precipitation over the next 24 hours.

&&

IAC153-169-050600-
/O.NEW.KDMX.FL.W.0009.260704T0951Z-260705T1951Z/
/AESI4.1.ER.260704T0826Z.260705T0000Z.260705T1350Z.NO/
451 AM CDT Sat Jul 4 2026

...FLOOD WARNING IN EFFECT FROM EARLY THIS MORNING TO EARLY TOMORROW
AFTERNOON...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...The South Skunk River near Ames US 30, or from Ioway Creek
  to the Polk-Jasper County line.

* WHEN...From early this morning to early tomorrow afternoon.

* IMPACTS...At 23.0 feet, Water affects the Shady Grove Trailer Park
  located at 1006 S Dayton Ave as well as the railroad just
  northeast of Cambridge.

* ADDITIONAL DETAILS...
  - At 4:00 AM CDT Saturday the stage was 22.0 feet.
  - Forecast...The river is expected to rise to a crest between
    22.5 and 23 feet this evening. It will then fall below flood
    stage tomorrow morning.
  - Flood stage is 21.5 feet.

&&

LAT...LON 4201 9364 4201 9356 4176 9335 4168 9335
      4180 9352

$$

IAC169-042045-
/O.NEW.KDMX.FL.W.0008.260704T0951Z-260704T2041Z/
/AMWI4.1.ER.260704T0902Z.260704T1300Z.260704T1440Z.NO/
451 AM CDT Sat Jul 4 2026

...FLOOD WARNING IN EFFECT FROM EARLY THIS MORNING TO LATE THIS
AFTERNOON...

* WHAT...Minor flooding is forecast.

* WHERE...The Ioway Creek at Ames Lincoln Way, or from the
  Story-Boone County line to the South Skunk River.

* WHEN...From early this morning to late this afternoon.

* IMPACTS...At 10.4 feet, Water affects lowlands around S 4th St.

* ADDITIONAL DETAILS...
  - At 4:00 AM CDT Saturday the stage was 10.0 feet.
  - Forecast...The river will rise to between 10.3 and 10.8 feet
    this morning. It will then fall below flood stage late this
    morning.
  - Flood stage is 10.0 feet.

&&

LAT...LON 4207 9370 4211 9370 4209 9366 4205 9363
      4201 9356 4201 9364 4203 9367

$$

Ansorge