Severe thunderstorms developed during the evening of June 29th ahead of a cold front. As these storms moved across northeast Iowa they produced large hail and damaging winds. Two pole sheds were destroyed near Boyd (Chickasaw County) where baseball sized hail also fell. The large hail destroyed crops in an area from Nashua northeast toward Boyd. In Calmar (Winneshiek County), several trees were blown down and golf ball sized hail damaged several vehicles.

Hail in FLOYD, IOWA
From 29-JUN-14 19:00:00 to 29-JUN-14 19:00:00 (CST-6)
Location: CARRVILLE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golf ball sized hail fell just west of Nashua.

Hail in CHICKASAW, IOWA
From 29-JUN-14 19:20:00 to 29-JUN-14 19:20:00 (CST-6)
Location: BOYD
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Baseball sized hail fell northeast of Boyd.

Thunderstorm Wind in CHICKASAW, IOWA
From 29-JUN-14 19:20:00 to 29-JUN-14 19:20:00 (CST-6)
Location: BOYD
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 1.50M
Reported by: Emergency Manager

Two pole sheds were destroyed and there was sporadic crop damage just north of Boyd.

Thunderstorm Wind in CHICKASAW, IOWA
From 29-JUN-14 19:22:00 to 29-JUN-14 19:22:00 (CST-6)
Location: NEW HAMPTON
Magnitude: 50.00 EG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down in New Hampton. One of the trees landed on a house causing minimal damage.

Hail in CHICKASAW, IOWA
From 29-JUN-14 19:22:00 to 29-JUN-14 19:22:00 (CST-6)
Location: BOYD
Magnitude: 1.75 
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Golf ball sized hail fell east of New Hampton. The hail broke windows and damaged siding on several homes.

Hail in FAYETTE, IOWA
From 29-JUN-14 19:35:00 to 29-JUN-14 19:35:00 (CST-6)
Location: WAUCOMA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in WINNESHIEK, IOWA
From 29-JUN-14 19:40:00 to 29-JUN-14 19:40:00 (CST-6)
Location: FT ATKINSON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Golf ball sized hail fell in Fort Atkinson.

Thunderstorm Wind in WINNESHIEK, IOWA
From 29-JUN-14 19:45:00 to 29-JUN-14 19:45:00 (CST-6)
Location: CALMAR
Magnitude: 54.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Several large trees were blown down in Calmar. One tree landed on a pickup truck.

Hail in WINNESHIEK, IOWA
From 29-JUN-14 19:45:00 to 29-JUN-14 19:45:00 (CST-6)
Location: CALMAR
Magnitude: 1.75 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Golf ball sized hail fell in Calmar.

Hail in ALLAMAKEE, IOWA
From 29-JUN-14 20:10:00 to 29-JUN-14 20:10:00 (CST-6)
Location: LUDLOW
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in ALLAMAKEE, IOWA
From 29-JUN-14 20:13:00 to 29-JUN-14 20:13:00 (CST-6)
Location: WAUKON MUNI ARPT
Magnitude: 50.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Emergency Manager

Three 2 foot diameter trees were blown down on State Highway 9 northeast of Waukon.

Thunderstorm Wind in WINNESHIEK, IOWA
From 29-JUN-14 19:58:00 to 29-JUN-14 19:58:00 (CST-6)
Location: DECORAH MUNI ARPT
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were snapped off or uprooted southeast of Decorah.

Hail in CHICKASAW, IOWA
From 29-JUN-14 19:04:00 to 29-JUN-14 19:18:00 (CST-6)
Location: NASHUA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 3.10M
Reported by: Trained Spotter

Golf ball sized hail fell from Nashua northeast toward Boyd. The hail destroyed crops, stripping both beans and corn.

Thunderstorm Wind in CHICKASAW, IOWA
From 29-JUN-14 19:04:00 to 29-JUN-14 19:04:00 (CST-6)
Location: NASHUA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down in Nashua.

Hail in WINNESHIEK, IOWA
From 29-JUN-14 20:00:00 to 29-JUN-14 20:00:00 (CST-6)
Location: DECORAH MUNI ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter sized hail fell east of Decorah.

Hail in ALLAMAKEE, IOWA
From 29-JUN-14 20:10:00 to 29-JUN-14 20:10:00 (CST-6)
Location: WAUKON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ALLAMAKEE, IOWA
From 29-JUN-14 20:10:00 to 29-JUN-14 20:10:00 (CST-6)
Location: WAUKON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

An estimated wind gust of 60 mph occurred in Waukon.

Thunderstorm Wind in CHICKASAW, IOWA
From 29-JUN-14 19:25:00 to 29-JUN-14 19:25:00 (CST-6)
Location: BOYD
Magnitude: 50.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous trees were either blown down or uprooted on and near a golf course east of New Hampton. One of the downed trees caused one lane of State Highway 24 to be closed, a semi trailer was blown over onto its side and an outbuilding was destroyed. The cart shelter at the golf course was also damaged by the high winds.

Thunderstorm Wind in CHICKASAW, IOWA
From 29-JUN-14 19:21:00 to 29-JUN-14 19:21:00 (CST-6)
Location: BOYD
Magnitude: 50.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Public

A pole shed was destroyed northeast of Boyd.