Thunderstorms produced damaging winds at several locations, as well as large hail and flash flooding at one place each, in northwest Iowa on the evening of June 17th into the post midnight hours of June 18th.

Thunderstorm Wind in PLYMOUTH, IOWA
From 17-JUN-16 21:13:00 to 17-JUN-16 21:13:00 (CST-6)
Location: LE MARS MUNI ARPT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, including several trees blown down.

Thunderstorm Wind in DICKINSON, IOWA
From 17-JUN-16 18:05:00 to 17-JUN-16 18:05:00 (CST-6)
Location: ARNOLDS PARK
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds caused tree damage, including an 8 inch diameter limb blown down onto a road.

Thunderstorm Wind in DICKINSON, IOWA
From 17-JUN-16 18:28:00 to 17-JUN-16 18:28:00 (CST-6)
Location: SPIRIT LAKE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds caused tree damage, including a 12 inch diameter limb blown down.

Thunderstorm Wind in PLYMOUTH, IOWA
From 17-JUN-16 20:45:00 to 17-JUN-16 20:45:00 (CST-6)
Location: ADAVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds blew shingles off a roof.

Thunderstorm Wind in WOODBURY, IOWA
From 17-JUN-16 21:12:00 to 17-JUN-16 21:12:00 (CST-6)
Location: (SUX)SIOUX CITY ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Hail in PLYMOUTH, IOWA
From 17-JUN-16 21:28:00 to 17-JUN-16 21:28:00 (CST-6)
Location: KINGSLEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CHEROKEE, IOWA
From 17-JUN-16 21:30:00 to 17-JUN-16 21:30:00 (CST-6)
Location: FIELDING
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, including one tree blown down onto a machine shed.

Thunderstorm Wind in WOODBURY, IOWA
From 17-JUN-16 21:44:00 to 17-JUN-16 21:44:00 (CST-6)
Location: LAWTON
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, including a large tree blown down. The winds also damaged a barn.

Thunderstorm Wind in WOODBURY, IOWA
From 17-JUN-16 22:08:00 to 17-JUN-16 22:08:00 (CST-6)
Location: CORRECTIONVILLE
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds caused tree damage, including several trees blown down.

Thunderstorm Wind in WOODBURY, IOWA
From 17-JUN-16 22:16:00 to 17-JUN-16 22:16:00 (CST-6)
Location: (SUX)SIOUX CITY ARPT
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Flash Flood in WOODBURY, IOWA
From 18-JUN-16 00:53:00 to 18-JUN-16 04:00:00 (CST-6)
Location: MOVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain from thunderstorms caused flash flooding of several areas along and near Highway 20. Water was running over roads, forcing the closure of some roads.

Thunderstorm Wind in SIOUX, IOWA
From 17-JUN-16 19:40:00 to 17-JUN-16 19:40:00 (CST-6)
Location: ROCK VLY
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds caused tree damage, including several branches blown down. Tree debris damaged power lines and caused a power outage.

Thunderstorm Wind in SIOUX, IOWA
From 17-JUN-16 19:55:00 to 17-JUN-16 19:55:00 (CST-6)
Location: HAWARDEN
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew down numerous trees.

Thunderstorm Wind in PLYMOUTH, IOWA
From 17-JUN-16 20:42:00 to 17-JUN-16 20:42:00 (CST-6)
Location: LE MARS
Magnitude: 59.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds caused tree damage.

Thunderstorm Wind in WOODBURY, IOWA
From 17-JUN-16 21:40:00 to 17-JUN-16 21:40:00 (CST-6)
Location: (SUX)SIOUX CITY ARPT
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS