Thunderstorms produced large hail, along with a few reports of damaging winds, in northwest Iowa from around noon through the late afternoon of September 22nd.

Hail in O'BRIEN, IOWA
From 22-SEP-10 16:40:00 to 22-SEP-10 16:40:00 (CST-6)
Location: HARTLEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Large hail covered the ground to ankle deep.

Hail in CLAY, IOWA
From 22-SEP-10 17:00:00 to 22-SEP-10 17:00:00 (CST-6)
Location: SPENCER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in CLAY, IOWA
From 22-SEP-10 17:03:00 to 22-SEP-10 17:03:00 (CST-6)
Location: (3SE)SPENCER MUNI AR
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in SIOUX, IOWA
From 22-SEP-10 11:37:00 to 22-SEP-10 11:37:00 (CST-6)
Location: LEBANON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SIOUX, IOWA
From 22-SEP-10 12:00:00 to 22-SEP-10 12:00:00 (CST-6)
Location: ROCK VLY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OSCEOLA, IOWA
From 22-SEP-10 16:02:00 to 22-SEP-10 16:02:00 (CST-6)
Location: ASHTON
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail dented at least one vehicle.

Thunderstorm Wind in O'BRIEN, IOWA
From 22-SEP-10 16:15:00 to 22-SEP-10 16:15:00 (CST-6)
Location: SANBORN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage, including small branches blown down. The winds were accompanied by quarter size hail.

Hail in O'BRIEN, IOWA
From 22-SEP-10 16:15:00 to 22-SEP-10 16:15:00 (CST-6)
Location: SANBORN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail was accompanied by damaging wind gusts.

Hail in O'BRIEN, IOWA
From 22-SEP-10 16:32:00 to 22-SEP-10 16:32:00 (CST-6)
Location: HARTLEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Small hail falling for 15 to 20 minutes increased to quarter size just before ending.

Hail in SIOUX, IOWA
From 22-SEP-10 14:14:00 to 22-SEP-10 14:14:00 (CST-6)
Location: ROCK VLY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in LYON, IOWA
From 22-SEP-10 15:13:00 to 22-SEP-10 15:13:00 (CST-6)
Location: LOSTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LYON, IOWA
From 22-SEP-10 15:22:00 to 22-SEP-10 15:22:00 (CST-6)
Location: ROCK RAPIDS
Magnitude: 2.75 
Crop damage: 0.00K
Reported by: Broadcast Media

Large hail dented vehicles and windshields;.

Hail in LYON, IOWA
From 22-SEP-10 15:25:00 to 22-SEP-10 15:25:00 (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 22-SEP-10 15:42:00 to 22-SEP-10 15:42:00 (CST-6)
Location: GEORGE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LYON, IOWA
From 22-SEP-10 15:49:00 to 22-SEP-10 15:49:00 (CST-6)
Location: GEORGE SUDENGA ARPT
Magnitude: 2.00 
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail dented a few vehicles.

Thunderstorm Wind in SIOUX, IOWA
From 22-SEP-10 15:53:00 to 22-SEP-10 15:53:00 (CST-6)
Location: BOYDEN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage, including a healthy 2 foot diameter tree broken off about 5 feet above the ground.

Hail in OSCEOLA, IOWA
From 22-SEP-10 15:55:00 to 22-SEP-10 15:55:00 (CST-6)
Location: ASHTON
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail cracked windows and dented vehicles.

Hail in O'BRIEN, IOWA
From 22-SEP-10 15:59:00 to 22-SEP-10 15:59:00 (CST-6)
Location: SHELDON
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media