A generally stationary boundary remained oriented roughly west to east across the state through the evening and overnight hours.  As a result, storms initiated along and north of the boundary and provided multiple rounds of heavy rainfall from roughly Ames northward.  Rainfall amounts typically resided within the 2 to 5 inch range with a few reports within the 5 to 5.5 inch range.  Given the relatively short duration of the rainfall, flash flooding was reported in a number of areas, again ranging from Ames northward.

Flash Flood in WRIGHT, IOWA
From 23-SEP-16 03:00:00 to 23-SEP-16 08:00:00 (CST-6)
Location: GOLDFIELD
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported water flowing over the road near River Park in Goldfield.

Flood in BREMER, IOWA
From 23-SEP-16 12:17:00 to 24-SEP-16 10:00:00 (CST-6)
Location: READLYN
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 100.00K
Reported by: Department of Highways

Iowa DOT reported IA Highway 3 closed near Readlyn due to flooding.  Detour in place.

Flood in BUTLER, IOWA
From 23-SEP-16 01:42:00 to 24-SEP-16 10:00:00 (CST-6)
Location: SHELL ROCK
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 200.00K
Reported by: Department of Highways

Iowa DOT and local law enforcement have closed Highway 3 between County Road T55 near Clarksville and US 218 near Shell Rock due to flooding of the Shell Rock River.

Flood in BREMER, IOWA
From 23-SEP-16 03:45:00 to 24-SEP-16 10:00:00 (CST-6)
Location: WAVERLY
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported all of the southeast portion of Waverly has been evacuated due to the Cedar River flooding.  Time of evacuation unknown.

Flood in WRIGHT, IOWA
From 23-SEP-16 09:43:00 to 24-SEP-16 10:00:00 (CST-6)
Location: BELMOND
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 100.00K
Reported by: Department of Highways

Iowa DOT reported US Highway 69 closed near Belmond due to flooding.  Detour in place.

Flash Flood in BREMER, IOWA
From 23-SEP-16 03:45:00 to 23-SEP-16 04:15:00 (CST-6)
Location: BREMER
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported a bridge along C38, or 212th St, has water flowing over it due to Baskins Run flooding.

Flash Flood in BUTLER, IOWA
From 23-SEP-16 04:00:00 to 23-SEP-16 04:15:00 (CST-6)
Location: CLARKSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported water up to the wheel wells of a pickup truck along 220th st near Terrace Ave.

Flash Flood in BREMER, IOWA
From 23-SEP-16 03:45:00 to 23-SEP-16 04:15:00 (CST-6)
Location: DENVER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported that an officer is notifying residents along Forest Ave in Denver to evacuate due to the creek flooding the northern part of town.

Flash Flood in FRANKLIN, IOWA
From 23-SEP-16 03:00:00 to 23-SEP-16 04:15:00 (CST-6)
Location: SHEFFIELD
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 200.00K
Reported by: Law Enforcement

Law enforcement reported numerous secondary roads in Franklin County with water over them to varying depths. Some roads are closed.

Flash Flood in FRANKLIN, IOWA
From 23-SEP-16 02:19:00 to 23-SEP-16 04:15:00 (CST-6)
Location: GENEVA
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 200.00K
Reported by: Law Enforcement

Law enforcement reported water flowing over Highway 65 south of 95th street in Franklin County.

Heavy Rain in BOONE, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: NAPIER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer recorded heavy rainfall of 4.01 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 22-SEP-16 18:30:00 to 22-SEP-16 22:23:00 (CST-6)
Location: ONTARIO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported heavy rainfall of 4.02 inches.  Rainfall ongoing at report time.

Heavy Rain in GRUNDY, IOWA
From 21-SEP-16 23:00:00 to 22-SEP-16 23:00:00 (CST-6)
Location: STOUT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported heavy rainfall of 4.1 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 22-SEP-16 18:30:00 to 22-SEP-16 23:11:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported heavy rainfall of 5.02 inches storm total.

Heavy Rain in STORY, IOWA
From 22-SEP-16 19:00:00 to 22-SEP-16 23:30:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported heavy rainfall of 5.11 inches since rain began at 8pm.

Heavy Rain in STORY, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer reported 4.86 inches of heavy rainfall over the past 24 hours.

Heavy Rain in TAMA, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: DYSART
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer reported 2.09 inches of heavy rainfall over the past 24 hours.

Heavy Rain in STORY, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer reported heavy rainfall of 5.11 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: ONTARIO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer reported heavy rainfall of 5.41 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: GILBERT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer reported heavy rainfall of 3.25 inches over the last 24 hours.

Heavy Rain in KOSSUTH, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: ALGONA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer recorded heavy rainfall of 2.32 inches over the last 24 hours.

Heavy Rain in TAMA, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: TRAER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer recorded heavy rainfall of 1.97 inches over the last 24 hours.

Heavy Rain in WRIGHT, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: CLARION
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer recorded heavy rainfall of 3.82 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: MIDVALE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer recorded heavy rainfall of 4.54 inches over the last 24 hours.

Heavy Rain in BREMER, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: TRIPOLI
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer recorded heavy rainfall of 4.61 inches over the last 24 hours.

Heavy Rain in CERRO GORDO, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: (MCW)MASON CITY MUNI
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Mason City ASOS measured 2.13 inches of heavy rainfall over the last 24 hours.

Heavy Rain in BLACK HAWK, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: (ALO)WATERLOO MUNI A
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Waterloo ASOS recorded heavy rainfall of 2.12 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: AMES ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Ames ASOS recorded heavy rainfall of 3.30 inches over the last 24 hours.

Heavy Rain in PALO ALTO, IOWA
From 23-SEP-16 01:00:00 to 23-SEP-16 08:00:00 (CST-6)
Location: EMMETSBURG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Iowa DOT reported heavy rainfall of 3.50 inches storm total through 8am.

Heavy Rain in STORY, IOWA
From 22-SEP-16 19:00:00 to 22-SEP-16 23:30:00 (CST-6)
Location: ONTARIO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS employee reported heavy rainfall of 3.88 inches since rain began at 8pm.

Heavy Rain in STORY, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer reported heavy rainfall of 5.41 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 22-SEP-16 06:57:00 to 23-SEP-16 06:57:00 (CST-6)
Location: GILBERT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer reported heavy rainfall of 3.30 inches over the last 24 hours.

Flash Flood in STORY, IOWA
From 22-SEP-16 21:25:00 to 23-SEP-16 02:29:00 (CST-6)
Location: ONTARIO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast media reported standing water in places with others covered with flowing water on Lincoln Way.  A manhole cover was also reported blown off on Stange Road and an underpass flooded at Grand Ave.

Flash Flood in STORY, IOWA
From 22-SEP-16 21:30:00 to 23-SEP-16 02:29:00 (CST-6)
Location: AMES
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported College Creek on ISU campus out of its banks and has reached the base of Union Drive.  Heavy rainfall still ongoing as of time of report.

Flash Flood in STORY, IOWA
From 22-SEP-16 21:40:00 to 23-SEP-16 02:29:00 (CST-6)
Location: ONTARIO
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported portions of Lincoln Way and Grand Ave flooded.  Other streets impacted include South Dakota and Mortensen, Arizona and Ontario and numerous other roads.  Depth of water estimated to be 3 to 4 feet deep.

Heavy Rain in WRIGHT, IOWA
From 22-SEP-16 06:00:00 to 23-SEP-16 06:00:00 (CST-6)
Location: CLARION ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Clarion AWOS recorded heavy rainfall of 2.60 inches over the last 24 hours.

Flash Flood in STORY, IOWA
From 22-SEP-16 22:30:00 to 23-SEP-16 02:29:00 (CST-6)
Location: AMES
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported stores along Stange Road starting to flood with water from out front.

Flash Flood in STORY, IOWA
From 22-SEP-16 22:55:00 to 23-SEP-16 02:29:00 (CST-6)
Location: AMES
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Ames Police reported several streets throughout the town have deep enough water to cause multiple stalled vehicles.

Flash Flood in STORY, IOWA
From 22-SEP-16 23:00:00 to 23-SEP-16 02:29:00 (CST-6)
Location: AMES ARPT
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported water flowing rapidly through a parking lot at Jack Trice stadium.  Water estimated to be 3 to 6 inches deep and up to bumpers on some vehicles.

Flash Flood in WRIGHT, IOWA
From 23-SEP-16 02:30:00 to 23-SEP-16 06:00:00 (CST-6)
Location: ROWAN
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 200.00K
Reported by: Law Enforcement

Law enforcement reported numerous secondary roads with water over topping them, with some now closed.  Issues are mostly across northern Wright County, but scattered about elsewhere too.