A hot a humid air mass led to scattered thunderstorms the morning and afternoon of June 14th, 2017.  The scattered thunderstorms brought heavy rain rates, and spotty severe weather reports across eastern Iowa, northwest Illinois, and northeast Missouri. The most significant severe weather occurred late in the afternoon, as storms moved east across Bureau and Putnam Counties into La Salle County.

Thunderstorm Wind in DES MOINES, IOWA
From 14-JUN-17 13:00:00 to 14-JUN-17 13:00:00 (CST-6)
Location: MEDIAPOLIS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter estimated winds of 60 mph.

Hail in DUBUQUE, IOWA
From 14-JUN-17 17:11:00 to 14-JUN-17 17:11:00 (CST-6)
Location: DUBUQUE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DUBUQUE, IOWA
From 14-JUN-17 17:12:00 to 14-JUN-17 17:12:00 (CST-6)
Location: CENTER GROVE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DUBUQUE, IOWA
From 14-JUN-17 17:12:00 to 14-JUN-17 17:12:00 (CST-6)
Location: CENTER GROVE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Hail in DUBUQUE, IOWA
From 14-JUN-17 17:12:00 to 14-JUN-17 17:12:00 (CST-6)
Location: CENTER GROVE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DUBUQUE, IOWA
From 14-JUN-17 17:13:00 to 14-JUN-17 17:13:00 (CST-6)
Location: DUBUQUE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DUBUQUE, IOWA
From 14-JUN-17 17:15:00 to 14-JUN-17 17:20:00 (CST-6)
Location: CENTER GROVE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail lasted for 5 minutes.

Hail in DUBUQUE, IOWA
From 14-JUN-17 17:15:00 to 14-JUN-17 17:15:00 (CST-6)
Location: ASBURY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JACKSON, IOWA
From 14-JUN-17 18:50:00 to 14-JUN-17 18:50:00 (CST-6)
Location: MAQUOKETA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in DES MOINES, IOWA
From 14-JUN-17 12:55:00 to 14-JUN-17 12:55:00 (CST-6)
Location: MEDIAPOLIS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A residential swing set was damaged.

Thunderstorm Wind in LINN, IOWA
From 14-JUN-17 11:00:00 to 14-JUN-17 11:00:00 (CST-6)
Location: MT VERNON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree limbs were reported down in southeast corner of Mt Vernon and power was knocked out to the city of Mt Vernon.

Hail in LEE, IOWA
From 14-JUN-17 15:46:00 to 14-JUN-17 15:46:00 (CST-6)
Location: CROTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DUBUQUE, IOWA
From 14-JUN-17 17:09:00 to 14-JUN-17 17:17:00 (CST-6)
Location: CENTER GROVE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported numerous hail reports of 1 to 1.75 inch diameter hail across central and eastern Dubuque County, including the city of Dubuque.

Hail in DUBUQUE, IOWA
From 14-JUN-17 17:12:00 to 14-JUN-17 17:12:00 (CST-6)
Location: ASBURY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LINN, IOWA
From 14-JUN-17 04:50:00 to 14-JUN-17 04:50:00 (CST-6)
Location: MARION ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A semi was blown over on Highway 13 from thunderstorm outflow winds. The time was estimated from radar data.

Thunderstorm Wind in LINN, IOWA
From 14-JUN-17 05:00:00 to 14-JUN-17 05:00:00 (CST-6)
Location: CEDAR RAPIDS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 8 to 10 inch diameter tree snapped at base. The time was estimated from radar data.

Thunderstorm Wind in LINN, IOWA
From 14-JUN-17 04:40:00 to 14-JUN-17 04:40:00 (CST-6)
Location: CEDAR RAPIDS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Small limbs were reported blown down.

Thunderstorm Wind in LINN, IOWA
From 14-JUN-17 04:55:00 to 14-JUN-17 04:55:00 (CST-6)
Location: CEDAR RAPIDS
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported several trees snapped in half between 19th street and Blairs Ferry road. The time was estimated from radar data.

Thunderstorm Wind in IOWA, IOWA
From 14-JUN-17 04:20:00 to 14-JUN-17 04:20:00 (CST-6)
Location: MARENGO
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gusts were estimated to be 60 to 65 mph on the gust front of the storm, and this downed multiple trees in town. One tree fell onto power lines causing the pole to snap.  Time estimated from radar data.