Thunderstorms produced large hail in northwest Iowa during the late morning and afternoon of July 9th. The storms continued through that evening, producing damaging winds and flash flooding in addition to more large hail.

Hail in SIOUX, IOWA
From 09-JUL-09 13:05:00 to 09-JUL-09 13:15:00 (CST-6)
Location: ROCK VLY
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail damaged vehicles and windows in the town of Rock Valley. the amount of damage was not known.

Hail in LYON, IOWA
From 09-JUL-09 13:30:00 to 09-JUL-09 13:30:00 (CST-6)
Location: GEORGE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in PLYMOUTH, IOWA
From 09-JUL-09 16:00:00 to 09-JUL-09 16:00:00 (CST-6)
Location: REMSEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CLAY, IOWA
From 09-JUL-09 17:24:00 to 09-JUL-09 17:24:00 (CST-6)
Location: WEBB
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CLAY, IOWA
From 09-JUL-09 17:47:00 to 09-JUL-09 17:47:00 (CST-6)
Location: ROSSIE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SIOUX, IOWA
From 09-JUL-09 18:10:00 to 09-JUL-09 18:10:00 (CST-6)
Location: ROCK VLY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LYON, IOWA
From 09-JUL-09 18:10:00 to 09-JUL-09 18:10:00 (CST-6)
Location: INWOOD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in SIOUX, IOWA
From 09-JUL-09 18:15:00 to 09-JUL-09 18:15:00 (CST-6)
Location: ROCK VLY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SIOUX, IOWA
From 09-JUL-09 18:23:00 to 09-JUL-09 18:23:00 (CST-6)
Location: PERKINS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CLAY, IOWA
From 09-JUL-09 19:50:00 to 09-JUL-09 19:50:00 (CST-6)
Location: FOSTORIA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in DICKINSON, IOWA
From 09-JUL-09 19:55:00 to 09-JUL-09 19:55:00 (CST-6)
Location: FULLER FLD ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flash Flood in DICKINSON, IOWA
From 09-JUL-09 19:56:00 to 09-JUL-09 22:30:00 (CST-6)
Location: FULLER FLD ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain caused flash flooding of streets in and near Milford, including part of U.S. Highway 71.

Thunderstorm Wind in DICKINSON, IOWA
From 09-JUL-09 20:08:00 to 09-JUL-09 20:08:00 (CST-6)
Location: WEST OKOBOJI
Magnitude: 52.00 EG
Property damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused damage to corn crops. The amount of crop damage was not known.

Flash Flood in DICKINSON, IOWA
From 09-JUL-09 20:30:00 to 09-JUL-09 22:30:00 (CST-6)
Location: FULLER FLD ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hevay rain caused flash flooding of streets and low areas, including yards and basements. Water was a foot deep on part of U.S. Highway 71 at Arnold's Park.

Hail in LYON, IOWA
From 09-JUL-09 18:37:00 to 09-JUL-09 18:37:00 (CST-6)
Location: ROCK RAPIDS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LYON, IOWA
From 09-JUL-09 18:38:00 to 09-JUL-09 18:38:00 (CST-6)
Location: ROCK RAPIDS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SIOUX, IOWA
From 09-JUL-09 18:42:00 to 09-JUL-09 18:42:00 (CST-6)
Location: BOYDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LYON, IOWA
From 09-JUL-09 19:00:00 to 09-JUL-09 19:00:00 (CST-6)
Location: GEORGE SUDENGA ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OSCEOLA, IOWA
From 09-JUL-09 19:03:00 to 09-JUL-09 19:03:00 (CST-6)
Location: ASHTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CLAY, IOWA
From 09-JUL-09 19:39:00 to 09-JUL-09 19:39:00 (CST-6)
Location: FOSTORIA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in CLAY, IOWA
From 09-JUL-09 19:39:00 to 09-JUL-09 19:39:00 (CST-6)
Location: EVERLY
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Broadcast Media

Large hail damaged vehicles. The amount of damage was not known.

Hail in CLAY, IOWA
From 09-JUL-09 19:39:00 to 09-JUL-09 19:39:00 (CST-6)
Location: EVERLY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in DICKINSON, IOWA
From 09-JUL-09 20:30:00 to 09-JUL-09 20:30:00 (CST-6)
Location: TERRIL
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CLAY, IOWA
From 09-JUL-09 20:35:00 to 09-JUL-09 20:35:00 (CST-6)
Location: LANGDON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large hail was accompanied by estimated 50 mph wind gusts.

Hail in SIOUX, IOWA
From 09-JUL-09 10:30:00 to 09-JUL-09 10:30:00 (CST-6)
Location: ROCK VLY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in O'BRIEN, IOWA
From 09-JUL-09 18:35:00 to 09-JUL-09 19:00:00 (CST-6)
Location: SHELDON
Magnitude: 4.00 
Property damage: 2.00M
Reported by: Trained Spotter

Large hail caused widespread damage in and near Sheldon. The hail broke windows on vehicles and buildings, including 35 out of the 37 skylights on the local high school. The hail also severely dented vehicles, roofs, and siding, and caused tree damage. The hail also damaged crops near the city, but the amount of crop damage was not known.