Flash Flood Watch
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
373
WGUS63 KDMX 290842
FFADMX
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Des Moines IA
342 AM CDT Tue Sep 29 2026
IAZ075-084-085-095-300445-
/O.EXA.KDMX.FA.A.0015.260930T0000Z-261002T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mahaska-Lucas-Monroe-Wayne-
Including the cities of Oskaloosa, Albia, Humeston, Corydon,
Allerton, Chariton, and Seymour
342 AM CDT Tue Sep 29 2026
...FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH LATE THURSDAY
NIGHT...
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...A portion of south central Iowa, including the following
counties, Lucas, Mahaska, Monroe and Wayne.
* WHEN...From this evening through late Thursday night.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Area creeks and streams are running high and could flood with more
heavy rain.
* ADDITIONAL DETAILS...
- A prolong period of showers and storms is forecast Tuesday night
through Thursday evening. This rain will fall on saturated soil.
Rainfall totals will range from 2 to 4 inches in a southwest to
northeast oriented band across central Iowa, with locally higher
amounts likely. This rainfall may lead to flash flooding. In
addition, poor drainage and low lying area may experience
ponding. All this rainfall will cause rises on areas rivers,
which may exceed flood stage in at least a few locations.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For the latest stream observations and forecasts refer to
weather.gov/desmoines/water.
&&
$$
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>074-081>083-
092>094-300445-
/O.CON.KDMX.FA.A.0015.260930T0000Z-261002T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Adams-Union-Clarke-Taylor-
Ringgold-Decatur-
Including the cities of Atlantic, Audubon, Carlisle, Clear Lake,
Greene, Fonda, Sac City, Carroll, Algona, Tama, Reinbeck, Humboldt,
Forest City, Clarion, Adair, Dike, Iowa Falls, Marshalltown, Ackley,
Pomeroy, Greenfield, Jefferson, Emmetsburg, Grinnell, Ames, Grundy
Center, Manson, Early, Waterloo, Aplington, Gladbrook, Stuart,
Eldora, Eagle Grove, Belmond, Knoxville, Laurens, Leon, Lenox,
Parkersburg, Schaller, Boone, Northwood, Kanawha, Des Moines,
Norwalk, Clarksville, Webster City, Hampton, Mount Ayr, Casey,
Garner, Dumont, Manly, Lake View, Britt, Lamoni, Conrad, Waukee, Wall
Lake, Toledo, Fort Dodge, Bedford, Panora, Lake City, Indianola,
Denison, Wellsburg, Exira, Creston, Winterset, Perry, Cedar Falls,
Allison, Traer, Shell Rock, Corning, Estherville, Osceola, Newton,
Adel, Pella, New Market, Gilmore City, Waverly, Lake Mills, Dysart,
Rolfe, Guthrie Center, Mason City, Earlham, Odebolt, Rockwell City,
Pocahontas, Bayard, and Fontanelle
342 AM CDT Tue Sep 29 2026
...FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH LATE
THURSDAY NIGHT...
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...Much of central Iowa.
* WHEN...From this evening through late Thursday night.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Area creeks and streams are running high and could flood with more
heavy rain.
* ADDITIONAL DETAILS...
- A prolong period of showers and storms is forecast Tuesday night
through Thursday evening. This rain will fall on saturated soil.
Rainfall totals will range from 2 to 4 inches in a southwest to
northeast oriented band across central Iowa, with locally higher
amounts likely. This rainfall may lead to flash flooding. In
addition, poor drainage and low lying area may experience
ponding. All this rainfall will cause rises on areas rivers,
which may exceed flood stage in at least a few locations.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For the latest stream observations and forecasts refer to
weather.gov/desmoines/water.
&&
$$
Jimenez