A fast moving cold front crossed northeast Minnesota during the afternoon and evening of August 8th, touching off vigorous thunderstorms.

Hail in AITKIN, MINNESOTA
From 08-AUG-11 14:20:00 to 08-AUG-11 14:20:00 (CST-6)
Location: JACOBSON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ITASCA, MINNESOTA
From 08-AUG-11 14:30:00 to 08-AUG-11 14:30:00 (CST-6)
Location: GRAND RAPIDS ARPT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Gusty winds and heavy showers were accompanied by dime size hail.

Hail in ST. LOUIS, MINNESOTA
From 08-AUG-11 14:46:00 to 08-AUG-11 14:46:00 (CST-6)
Location: EVELETH
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail covered the ground.

Hail in CARLTON, MINNESOTA
From 08-AUG-11 16:42:00 to 08-AUG-11 16:42:00 (CST-6)
Location: ESKO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in ST. LOUIS, MINNESOTA
From 08-AUG-11 16:58:00 to 08-AUG-11 16:58:00 (CST-6)
Location: ELDES CORNER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail fell around the intersection of Midway and Stark Roads.

Hail in ST. LOUIS, MINNESOTA
From 08-AUG-11 16:59:00 to 08-AUG-11 16:59:00 (CST-6)
Location: ELDES CORNER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ST. LOUIS, MINNESOTA
From 08-AUG-11 17:00:00 to 08-AUG-11 17:00:00 (CST-6)
Location: ELDES CORNER
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in ST. LOUIS, MINNESOTA
From 08-AUG-11 17:05:00 to 08-AUG-11 17:05:00 (CST-6)
Location: PROCTOR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Rain in ITASCA, MINNESOTA
From 08-AUG-11 11:45:00 to 08-AUG-11 11:45:00 (CST-6)
Location: WIRT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall was 2.5 inches in less than an hour.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 08-AUG-11 17:14:00 to 08-AUG-11 17:14:00 (CST-6)
Location: MUNGER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 30 foot flag pole was blown over.

Heavy Rain in ST. LOUIS, MINNESOTA
From 08-AUG-11 18:11:00 to 08-AUG-11 18:11:00 (CST-6)
Location: DULUTH HGTS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Water was up to the edge of the curb at Old Becks Road at Gary Street.

Flash Flood in ST. LOUIS, MINNESOTA
From 08-AUG-11 17:42:00 to 08-AUG-11 17:42:00 (CST-6)
Location: FOND DU LAC
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

There was two inches of standing water on Interstate 35 and Highway 33.

Hail in ST. LOUIS, MINNESOTA
From 08-AUG-11 17:02:00 to 08-AUG-11 17:02:00 (CST-6)
Location: DULUTH HGTS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dime size hail fell around 60th Avenue West in Duluth.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 08-AUG-11 17:40:00 to 08-AUG-11 17:40:00 (CST-6)
Location: DULUTH HGTS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 4-inch diameter tree branch was broken at 83rd Avenue and Grand Avenue in Duluth.