By noon CST on the 27th, a weak area of surface low pressure was located over southeast South Dakota, with a stationary front extending to its north-northeast (along a Lidgerwood, ND, to Waskish, MN, line). Thunderstorms initially formed along a line from south of Bismarck (ND) to near Bemidji (MN), and across the tri-state boundary of ND, SD, and MN. The event had deep moisture to tap into, with precipitable water values around 1.5 inches. By early evening, the storms had shifted off toward Brainerd and Duluth.

Hail in BECKER, MINNESOTA
From 27-AUG-07 14:15:00 to 27-AUG-07 14:15:00 (CST-6)
Location: FRAZEE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BECKER, MINNESOTA
From 27-AUG-07 14:55:00 to 27-AUG-07 14:55:00 (CST-6)
Location: MIDWAY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OTTER TAIL, MINNESOTA
From 27-AUG-07 15:00:00 to 27-AUG-07 15:00:00 (CST-6)
Location: PADDOCK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WADENA, MINNESOTA
From 27-AUG-07 15:00:00 to 27-AUG-07 15:00:00 (CST-6)
Location: MENAHGA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail covered the lawn.

Hail in BECKER, MINNESOTA
From 27-AUG-07 15:10:00 to 27-AUG-07 15:10:00 (CST-6)
Location: LAKE PARK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BECKER, MINNESOTA
From 27-AUG-07 14:24:00 to 27-AUG-07 14:24:00 (CST-6)
Location: FRAZEE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HUBBARD, MINNESOTA
From 27-AUG-07 16:22:00 to 27-AUG-07 16:22:00 (CST-6)
Location: DORSET
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in HUBBARD, MINNESOTA
From 27-AUG-07 16:14:00 to 27-AUG-07 16:14:00 (CST-6)
Location: PARK RAPIDS
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The wind gust was measured by the ASOS at the Park Rapids aiport.

Hail in CLAY, MINNESOTA
From 27-AUG-07 17:52:00 to 27-AUG-07 17:52:00 (CST-6)
Location: ROLLAG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OTTER TAIL, MINNESOTA
From 27-AUG-07 18:25:00 to 27-AUG-07 18:25:00 (CST-6)
Location: DUNVILLA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BECKER, MINNESOTA
From 27-AUG-07 18:30:00 to 27-AUG-07 18:30:00 (CST-6)
Location: FRAZEE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GRANT, MINNESOTA
From 27-AUG-07 13:05:00 to 27-AUG-07 13:05:00 (CST-6)
Location: HERMAN MUNI ARPT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OTTER TAIL, MINNESOTA
From 27-AUG-07 14:10:00 to 27-AUG-07 14:10:00 (CST-6)
Location: VERGAS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OTTER TAIL, MINNESOTA
From 27-AUG-07 14:55:00 to 27-AUG-07 14:55:00 (CST-6)
Location: HILLVIEW
Magnitude: 3.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

The large hail damaged vehicles, roofs, gutters, and skylights.