Strong to severe storms and heavy rainfall moved up into Iowa from northern Missouri during the late afternoon and evening hours of the 22nd of June. Ahead of the storms, a warm front lifted into and through much of the state, bringing with it temperatures into the low to mid 80s and dew points in the low to mid 70s. Support for storms was decent with MUCAPE values of 2000+ J/kg reaching roughly the Interstate 80 corridor, effective bulk shear in the 30 to 40 kt range, and strong low level moisture transport boosting precipitable water values in excess of 1.5 to 1.75 inches.
All in all, a handful of severe storm reports (hail and wind) were seen as storms moved into the state from the south and eventually transitioned more into a rain threat that came to fruition over the eastern half of the Des Moines metro. A number of heavy rainfall amounts in excess of 2 to 4 inches were received, producing multiple flash flooding reports.

Lightning in POLK, IOWA
From 22-JUN-19 20:35:00 to 22-JUN-19 20:35:00 (CST-6)
Location: ORALABOR
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Social Media

Lightning struck a tree and the tree fell on a deck and car in Ankeny.

Hail in RINGGOLD, IOWA
From 22-JUN-19 17:35:00 to 22-JUN-19 17:35:00 (CST-6)
Location: KNOWLTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Emergency management relayed public report of nickel sized hail.

Thunderstorm Wind in UNION, IOWA
From 22-JUN-19 18:05:00 to 22-JUN-19 18:05:00 (CST-6)
Location: KENT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 60 mph winds and dime sized hail.

Heavy Rain in UNION, IOWA
From 22-JUN-19 18:00:00 to 22-JUN-19 18:30:00 (CST-6)
Location: CROMWELL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 2 inches of rain in about 30 minutes. The rain begin about 7pm.

Thunderstorm Wind in ADAIR, IOWA
From 22-JUN-19 18:50:00 to 22-JUN-19 18:50:00 (CST-6)
Location: GREENFIELD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported estimated 60 mph winds and pea sized hail.

Heavy Rain in POLK, IOWA
From 22-JUN-19 19:50:00 to 22-JUN-19 20:54:00 (CST-6)
Location: FT DES MOINES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Trained spotter reported heavy rainfall of about 3.80 inches. Beginning time estimated from radar.

Heavy Rain in POLK, IOWA
From 22-JUN-19 19:56:00 to 22-JUN-19 20:56:00 (CST-6)
Location: (DSM)DES MOINES INTL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast media relayed heavy rainfall of 2.39 inches in one hour.

Heavy Rain in POLK, IOWA
From 22-JUN-19 19:52:00 to 22-JUN-19 21:20:00 (CST-6)
Location: DES MOINES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported heavy rainfall of 4.60 inches so far today. Beginning time estimated from radar.

Heavy Rain in POLK, IOWA
From 22-JUN-19 19:32:00 to 22-JUN-19 22:15:00 (CST-6)
Location: CARNEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

KCCI relayed social media report of 4.50 inches of heavy rainfall so far.  Beginning time estimated from radar.

Flash Flood in POLK, IOWA
From 22-JUN-19 22:30:00 to 22-JUN-19 23:45:00 (CST-6)
Location: CAPITOL HGTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported the road impassable due to water.

Heavy Rain in POLK, IOWA
From 22-JUN-19 19:50:00 to 23-JUN-19 02:00:00 (CST-6)
Location: FT DES MOINES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported heavy rainfall of 4.75 inches overnight. Beginning and ending times estimated from radar.

Heavy Rain in MADISON, IOWA
From 22-JUN-19 06:00:00 to 23-JUN-19 06:00:00 (CST-6)
Location: WINTERSET
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of heavy rainfall of 2.11 inches over the last 24 hours.

Heavy Rain in POLK, IOWA
From 22-JUN-19 06:00:00 to 23-JUN-19 06:00:00 (CST-6)
Location: (DSM)DES MOINES INTL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Des Moines International Airport ASOS recorded heavy rainfall of 2.48 inches over the last 24 hours.

Heavy Rain in POLK, IOWA
From 22-JUN-19 06:00:00 to 23-JUN-19 06:00:00 (CST-6)
Location: WINDSOR HGTS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of heavy rainfall of 2.06 inches over the last 24 hours.

Heavy Rain in POLK, IOWA
From 22-JUN-19 06:00:00 to 23-JUN-19 06:00:00 (CST-6)
Location: LOVINGTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of heavy rainfall of 2.32 inches over the last 24 hours.

Heavy Rain in POLK, IOWA
From 22-JUN-19 06:00:00 to 23-JUN-19 06:00:00 (CST-6)
Location: SAYDELL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public report of heavy rainfall of 3.72 inches over the last 24 hours.

Heavy Rain in POLK, IOWA
From 22-JUN-19 06:00:00 to 23-JUN-19 06:00:00 (CST-6)
Location: ANKENY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of heavy rainfall of 2.37 inches over the last 24 hours.

Heavy Rain in WARREN, IOWA
From 22-JUN-19 06:00:00 to 23-JUN-19 06:00:00 (CST-6)
Location: NORWALK
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of heavy rainfall of 2.19 inches over the last 24 hours.

Heavy Rain in WARREN, IOWA
From 22-JUN-19 06:00:00 to 23-JUN-19 06:00:00 (CST-6)
Location: NORWALK
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of heavy rainfall of 2.35 inches over the last 24 hours.

Heavy Rain in POLK, IOWA
From 22-JUN-19 06:22:00 to 23-JUN-19 06:22:00 (CST-6)
Location: SWANWOOD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Ankeny Regional Airport AWOS recorded heavy rainfall of 2.06 inches over the last 24 hours.

Heavy Rain in DALLAS, IOWA
From 22-JUN-19 07:00:00 to 23-JUN-19 07:00:00 (CST-6)
Location: ADEL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer recorded heavy rainfall of 2.10 inches over the last 24 hours.

Thunderstorm Wind in POLK, IOWA
From 22-JUN-19 20:20:00 to 22-JUN-19 20:20:00 (CST-6)
Location: WINDSOR HGTS
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Social Media

Dispatch reported that a tree landed on a car, and nearby another tree was down in the street with some power lines down as well.

Thunderstorm Wind in POLK, IOWA
From 22-JUN-19 20:30:00 to 22-JUN-19 20:30:00 (CST-6)
Location: CAPITOL HGTS
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Social Media

A tree was down at the Iowa State Fairgrounds, it fell on a part of a building.

Flash Flood in POLK, IOWA
From 22-JUN-19 22:46:00 to 22-JUN-19 23:45:00 (CST-6)
Location: DES MOINES
Flood cause: Heavy Rain
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported 5 vehicles stranded and assistance needed to get people out of the water.

Hail in UNION, IOWA
From 22-JUN-19 18:10:00 to 22-JUN-19 18:15:00 (CST-6)
Location: CROMWELL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported hail that lasted about 5 minutes, with largest stones the size of quarters.

Flash Flood in POLK, IOWA
From 22-JUN-19 20:53:00 to 22-JUN-19 23:45:00 (CST-6)
Location: FT DES MOINES
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported water at least 6 inches deep flowing across SW 9th just north of McKinley Ave. The water was half way up on some vehicles tires.

Flash Flood in POLK, IOWA
From 22-JUN-19 20:47:00 to 22-JUN-19 23:45:00 (CST-6)
Location: DES MOINES
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager reported assisting a motorist whose car stalled near Martin Luther King Jr Parkway and Douglas Ave.

Flash Flood in POLK, IOWA
From 22-JUN-19 21:02:00 to 22-JUN-19 23:45:00 (CST-6)
Location: LOVINGTON
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager reported multiple water rescues from motorists whose cars stalled out in ponded water in parts of the city of Des Moines.

Flash Flood in POLK, IOWA
From 22-JUN-19 20:56:00 to 22-JUN-19 23:45:00 (CST-6)
Location: DES MOINES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported water at least 6 inches deep over the intersection of East 3rd and Walnut St in the East Village.

Flash Flood in POLK, IOWA
From 22-JUN-19 22:03:00 to 22-JUN-19 23:45:00 (CST-6)
Location: CAPITOL HGTS
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Department of Highways

Iowa DOT reported Highway 163/East University Ave flooded out just east of I-235 where the railroad goes over the road. A car was stalled out at this location from the water.

Flash Flood in POLK, IOWA
From 22-JUN-19 22:19:00 to 22-JUN-19 23:45:00 (CST-6)
Location: NORWOODVILLE
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Department of Highways

Iowa DOT reported calls stalled out near the intersection of Euclid and Delaware Ave from high water.