A frontal boundary resided predominantly right along the Iowa-Missouri border and remained relatively stationary throughout the event. Beginning on September 30th, 850mb flow rode over the front and helped initiated elevated showers and weak storms that persisted (scattered in nature) form the late afternoon of the 30th through the late afternoon on the 1st. While no severe weather was recorded, weak instability (MUCAPE under 1000 J/kg) and consistent moisture flow overriding the surface boundary, was able to produce total rainfall in excess of 3 inches. As a result, flooding was seen with numerous road closures across Black Hawk County.

Flood in BLACK HAWK, IOWA
From 02-OCT-18 08:00:00 to 02-OCT-18 11:30:00 (CST-6)
Location: BOIES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Black Hawk County Sheriff's Department reported numerous roads closed due to flooding throughout the county.

Heavy Rain in GRUNDY, IOWA
From 01-OCT-18 00:00:00 to 01-OCT-18 14:00:00 (CST-6)
Location: DIKE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager relayed a report of heavy rainfall of 3.60 inches. This is a delayed report. Times estimated. Due to limitations in entry, beginning time entered as midnight CST, October 1st.

Heavy Rain in BLACK HAWK, IOWA
From 01-OCT-18 00:00:00 to 01-OCT-18 16:00:00 (CST-6)
Location: HUDSON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported heavy rainfall of 3.25 inches for the event. Time estimated from September 30th 5pm through October 1st 5pm. Due to limitations in entry, beginning time entered as midnight CST, October 1st.

Flood in BLACK HAWK, IOWA
From 02-OCT-18 07:08:00 to 02-OCT-18 11:30:00 (CST-6)
Location: DUNKERTON DAVIS ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Black Hawk County EM reported the following roads closed due to flooding: Gresham Rd between Elk Run Rd and Crane Creek Rd, and Bennington Rd between Crane Creek Rd and Raymond Rd.

Flood in BLACK HAWK, IOWA
From 02-OCT-18 07:08:00 to 02-OCT-18 11:30:00 (CST-6)
Location: WATERLOO FLYERS ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Black Hawk County EM reported the following roads closed due to flooding: Eastman Rd between Cotter Rd and Foulk Rd, Cotter Rd between Miller Creek Rd and Ripple Rd, and Miller Creek Rd between Highway 218 and Cotter Rd.

Flood in BLACK HAWK, IOWA
From 02-OCT-18 07:08:00 to 02-OCT-18 11:30:00 (CST-6)
Location: LA PORTE CITY ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Black Hawk County EM reported Reinbeck Rd closed between Dysart Rd and Hammand Ave, as well was Hess Rd between Rama Rd and Reinbeck Rd closed.

Heavy Rain in GRUNDY, IOWA
From 01-OCT-18 00:00:00 to 01-OCT-18 14:00:00 (CST-6)
Location: GRUNDY CENTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager relayed a report of 2.65 inches of heavy rainfall. This is a delayed report. Time estimated. Due to limitations in entry, beginning time entered as midnight CST, October 1st.

Flood in GRUNDY, IOWA
From 01-OCT-18 11:25:00 to 02-OCT-18 08:00:00 (CST-6)
Location: DIKE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 50.00K
Reported by: Emergency Manager

Emergency manager reported that several creeks were out of their banks across the county.

Flood in BLACK HAWK, IOWA
From 01-OCT-18 11:20:00 to 02-OCT-18 11:30:00 (CST-6)
Location: EVANSDALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 50.00K
Reported by: Emergency Manager

Black Hawk County EM reported flooded roads between Orange Rd. and Shaulis Road. Several gravel roads were closed due to flooding throughout the county.