A shortwave trough moved across the midwest, pulling a surface boundary across the state. In the afternoon weak convection developed along this boundary, but most storms tended to be short-lived in nature with relatively weak shear profiles. These storms resulted in mainly wind damage reports across east-central Iowa. Convection continued to bubble through the evening with continued wind damage reports. Shortly after midnight convection out of the Dakotas made it to northern Iowa. This broken line of storms pushed across the state all night, with essentially no breaks in reports of large hail and damaging winds through sunrise. Additionally, some locations received heavy rain. Storms cleared the Des Moines metro area shortly after five in the morning and diminished in strength shortly after that.

Thunderstorm Wind in HARDIN, IOWA
From 04-JUN-20 15:50:00 to 04-JUN-20 15:50:00 (CST-6)
Location: IOWA FALLS
Magnitude: 52.00 EG
Reported by: Emergency Manager

County Emergency Manager reported multiple large trees down with power outages. Time estimated via radar.

Thunderstorm Wind in HUMBOLDT, IOWA
From 04-JUN-20 15:54:00 to 04-JUN-20 15:54:00 (CST-6)
Location: UNIQUE
Magnitude: 52.00 EG
Reported by: Public

Social media report of a roof blow off a cattle shed. Time estimated via radar.

Thunderstorm Wind in HUMBOLDT, IOWA
From 04-JUN-20 16:10:00 to 04-JUN-20 16:10:00 (CST-6)
Location: DAKOTA CITY
Magnitude: 50.00 EG
Reported by: Trained Spotter

Trained spotter reported a large tree down, accompanied by dime sized hail.

Thunderstorm Wind in HUMBOLDT, IOWA
From 05-JUN-20 01:38:00 to 05-JUN-20 01:38:00 (CST-6)
Location: UNIQUE
Magnitude: 52.00 EG
Reported by: Public

Social media picture of an uprooted tree. Time estimate via radar.

Thunderstorm Wind in HUMBOLDT, IOWA
From 05-JUN-20 01:48:00 to 05-JUN-20 01:48:00 (CST-6)
Location: DAKOTA CITY
Magnitude: 50.00 EG
Reported by: Public

Social media report of hail shredding corn crop. Time estimated via radar and post description.

Thunderstorm Wind in GREENE, IOWA
From 05-JUN-20 02:38:00 to 05-JUN-20 02:38:00 (CST-6)
Location: FARLIN
Magnitude: 52.00 EG
Reported by: Public

Social media report of extensive tree damage including a large tree split and large tree branches broken. Time estimated via radar.

Thunderstorm Wind in GREENE, IOWA
From 05-JUN-20 03:00:00 to 05-JUN-20 03:00:00 (CST-6)
Location: JEFFERSON
Magnitude: 52.00 EG
Reported by: Trained Spotter

Trained spotter reported trees and power lines down.

Thunderstorm Wind in DALLAS, IOWA
From 05-JUN-20 03:20:00 to 05-JUN-20 03:20:00 (CST-6)
Location: BOUTON
Magnitude: 52.00 EG
Reported by: Emergency Manager

Emergency manager reported large tree branches down throughout Bouton. Time estimated via radar.

Thunderstorm Wind in DALLAS, IOWA
From 05-JUN-20 03:30:00 to 05-JUN-20 03:30:00 (CST-6)
Location: DALLAS CENTER
Magnitude: 50.00 EG
Reported by: Emergency Manager

Emergency manager reported large tree branches down. Time estimated via radar.

Thunderstorm Wind in POLK, IOWA
From 05-JUN-20 03:42:00 to 05-JUN-20 03:42:00 (CST-6)
Location: ASHAWA
Magnitude: 52.00 EG
Reported by: NWS Employee

NWS Employee reported a large tree, approximately two feet in diameter and 60 feet tall, down off a bike train in West Des Moines. Time estimated via radar.

Thunderstorm Wind in POLK, IOWA
From 05-JUN-20 03:49:00 to 05-JUN-20 03:49:00 (CST-6)
Location: WEST DES MOINES
Magnitude: 52.00 EG
Reported by: Broadcast Media

Broadcast media relayed report of a large tree down near 63rd street and Railroad Avenue that also brought down a power line with it. Time estimated via radar.

Thunderstorm Wind in POLK, IOWA
From 05-JUN-20 03:50:00 to 05-JUN-20 03:50:00 (CST-6)
Location: ASHAWA
Magnitude: 52.00 EG
Reported by: Broadcast Media

Broadcast media relayed report of tree snapped at base. Time estimated via radar.

Thunderstorm Wind in POLK, IOWA
From 05-JUN-20 03:50:00 to 05-JUN-20 03:50:00 (CST-6)
Location: URBANDALE
Magnitude: 50.00 EG
Reported by: Public

Public report of a large tree branch down, reported via social media. Time estimated via social media.

Thunderstorm Wind in WARREN, IOWA
From 05-JUN-20 03:54:00 to 05-JUN-20 03:54:00 (CST-6)
Location: SPRING HILL
Magnitude: 52.00 EG
Reported by: Trained Spotter

A few large tree branches blown out of trees. Time estimated via radar.

Thunderstorm Wind in POLK, IOWA
From 05-JUN-20 03:55:00 to 05-JUN-20 03:55:00 (CST-6)
Location: DES MOINES
Magnitude: 52.00 EG
Reported by: Broadcast Media

Broadcast media relayed report of a six to eight inch tree limb down near Drake. Time estimated via radar.

Thunderstorm Wind in POLK, IOWA
From 05-JUN-20 03:55:00 to 05-JUN-20 03:55:00 (CST-6)
Location: WINDSOR HGTS
Magnitude: 50.00 EG
Reported by: Trained Spotter

Trained spotter reported a six inch tree branch down. Time estimated via radar.

Thunderstorm Wind in POLK, IOWA
From 05-JUN-20 03:58:00 to 05-JUN-20 03:58:00 (CST-6)
Location: FT DES MOINES
Magnitude: 52.00 EG
Reported by: Broadcast Media

Broadcast media relayed report of tree branches and power lines down near 5th Street and Hart Avenue. Time estimated via radar.

Thunderstorm Wind in MARION, IOWA
From 05-JUN-20 04:25:00 to 05-JUN-20 04:25:00 (CST-6)
Location: BEWBERN
Magnitude: 52.00 EG
Reported by: Trained Spotter

Trained spotter relayed report of large tree branches down and evergreen trees down at relative's home. Time estimated via radar.

Thunderstorm Wind in MARION, IOWA
From 05-JUN-20 04:32:00 to 05-JUN-20 04:32:00 (CST-6)
Location: COLUMBIA
Magnitude: 52.00 EG
Reported by: Trained Spotter

Trained spotter reported downed large tree branches and trees at relative's home. Garage and power lines damaged by downed trees. Time estimated via radar.

Thunderstorm Wind in HUMBOLDT, IOWA
From 04-JUN-20 16:07:00 to 04-JUN-20 16:07:00 (CST-6)
Location: DAKOTA CITY
Magnitude: 52.00 EG
Reported by: Trained Spotter

Trained spotter report of 60 mph wind gust.

Thunderstorm Wind in GRUNDY, IOWA
From 04-JUN-20 18:42:00 to 04-JUN-20 18:42:00 (CST-6)
Location: REINBECK
Magnitude: 52.00 EG
Reported by: Trained Spotter

Trained spotter report of tree branches down with winds estimated at 60 to 65 mph.

Thunderstorm Wind in EMMET, IOWA
From 04-JUN-20 23:21:00 to 04-JUN-20 23:21:00 (CST-6)
Location: ESTHERVILLE ARPT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Estherville ASOS report of 60 mph wind gust.

Thunderstorm Wind in EMMET, IOWA
From 04-JUN-20 23:25:00 to 04-JUN-20 23:25:00 (CST-6)
Location: ESTHERVILLE ARPT
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Estherville ASOS report of 56 knot wind gust.

Thunderstorm Wind in WRIGHT, IOWA
From 05-JUN-20 02:30:00 to 05-JUN-20 02:30:00 (CST-6)
Location: DOWS
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Williams RWIS report of 50 knot wind.

Thunderstorm Wind in GUTHRIE, IOWA
From 05-JUN-20 03:10:00 to 05-JUN-20 03:10:00 (CST-6)
Location: BAGLEY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager report of 60 mph wind gust.

Thunderstorm Wind in GUTHRIE, IOWA
From 05-JUN-20 03:20:00 to 05-JUN-20 03:20:00 (CST-6)
Location: BAYARD
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Bayard Fire Department reported gust of 70 mph.

Thunderstorm Wind in DALLAS, IOWA
From 05-JUN-20 03:25:00 to 05-JUN-20 03:25:00 (CST-6)
Location: MINBURN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Fire Department reported a 60 mph wind gust.

Thunderstorm Wind in DALLAS, IOWA
From 05-JUN-20 03:34:00 to 05-JUN-20 03:34:00 (CST-6)
Location: DALLAS CENTER
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter estimated winds of 60 to 70 mph.

Thunderstorm Wind in POLK, IOWA
From 05-JUN-20 03:36:00 to 05-JUN-20 03:39:00 (CST-6)
Location: GRIMES
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS Employee estimated winds of at least 60 mph between 4:36am to 4:39am.

Thunderstorm Wind in DALLAS, IOWA
From 05-JUN-20 03:44:00 to 05-JUN-20 03:44:00 (CST-6)
Location: HADDEN HILL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported wind gusts of 60 mph.

Thunderstorm Wind in POLK, IOWA
From 05-JUN-20 03:50:00 to 05-JUN-20 03:50:00 (CST-6)
Location: DODGE FLD ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS employee reported winds of 60 mph.

Thunderstorm Wind in POLK, IOWA
From 05-JUN-20 04:00:00 to 05-JUN-20 04:00:00 (CST-6)
Location: (DSM)DES MOINES INTL
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Des Moines ASOS measured gust of 50 knots.

Thunderstorm Wind in KOSSUTH, IOWA
From 04-JUN-20 23:33:00 to 04-JUN-20 23:33:00 (CST-6)
Location: BANCROFT
Magnitude: 48.00 EG
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Trained Spotter

Trained spotter reported dime-sized hail with wind gusts over 50 mph which caused significant damage to beans and corn. Delayed report with time estimated via radar.

Heavy Rain in BLACK HAWK, IOWA
From 04-JUN-20 07:00:00 to 05-JUN-20 07:00:00 (CST-6)
Location: WATERLOO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS reported a 24 hour rain total of 2.04 inches.

Heavy Rain in BREMER, IOWA
From 04-JUN-20 07:00:00 to 05-JUN-20 07:00:00 (CST-6)
Location: TRIPOLI
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Co-op observer in Tripoli reported a 24-hour rainfall total of 2.86 inches.

Heavy Rain in DALLAS, IOWA
From 04-JUN-20 07:00:00 to 05-JUN-20 07:00:00 (CST-6)
Location: PERRY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Co-op observer reported a 24-hour rainfall total of 2.21 inches.

Heavy Rain in GRUNDY, IOWA
From 04-JUN-20 07:46:00 to 05-JUN-20 07:46:00 (CST-6)
Location: REINBECK
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station reported a 24-hour rainfall total of 2.10 inches.

Heavy Rain in GRUNDY, IOWA
From 04-JUN-20 08:00:00 to 05-JUN-20 08:00:00 (CST-6)
Location: REINBECK
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station reported a 24-hour rainfall total of 2.52 inches.

Hail in WEBSTER, IOWA
From 04-JUN-20 19:14:00 to 04-JUN-20 19:14:00 (CST-6)
Location: BRUSHY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter report of golf ball sized hail.

Hail in KOSSUTH, IOWA
From 04-JUN-20 23:55:00 to 04-JUN-20 23:55:00 (CST-6)
Location: TITONKA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported quarter sized hail. Time estimated via radar.

Hail in HUMBOLDT, IOWA
From 05-JUN-20 01:27:00 to 05-JUN-20 01:27:00 (CST-6)
Location: DAKOTA CITY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported ping pong ball sized hail with small limbs down.

Hail in HUMBOLDT, IOWA
From 05-JUN-20 01:40:00 to 05-JUN-20 01:40:00 (CST-6)
Location: DAKOTA CITY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast media relayed report of half dollar sized hail.

Hail in CLARKE, IOWA
From 05-JUN-20 03:33:00 to 05-JUN-20 03:33:00 (CST-6)
Location: MURRAY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter report of quarter sized hail.

Thunderstorm Wind in BLACK HAWK, IOWA
From 04-JUN-20 14:30:00 to 04-JUN-20 14:30:00 (CST-6)
Location: EVANSDALE
Magnitude: 50.00 EG
Reported by: Broadcast Media

KWWL relayed report of a large tree down. Time estimated via radar.

Thunderstorm Wind in BLACK HAWK, IOWA
From 04-JUN-20 15:00:00 to 04-JUN-20 15:00:00 (CST-6)
Location: EVANSDALE
Magnitude: 50.00 EG
Reported by: Trained Spotter

Trained spotter report of up to 6 inch diameter tree limbs down.

Thunderstorm Wind in BLACK HAWK, IOWA
From 04-JUN-20 15:00:00 to 04-JUN-20 15:00:00 (CST-6)
Location: WATERLOO
Magnitude: 50.00 EG
Reported by: Trained Spotter

Trained spotter report of 6 inch diameter tree limbs down at Lafayette Park.

Thunderstorm Wind in HARDIN, IOWA
From 04-JUN-20 15:50:00 to 04-JUN-20 15:50:00 (CST-6)
Location: IOWA FALLS MUNI ARPT
Magnitude: 52.00 EG
Reported by: Trained Spotter

Trained spotter reported large trees down and power outage.