A stationary front set up through central Minnesota.  Very warm and unstable air was lifted over the cold surface air to the north, touching off a few severe thunderstorms.

Hail in CASS, MINNESOTA
From 06-JUN-11 23:55:00 to 06-JUN-11 23:55:00 (CST-6)
Location: CASS LAKE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail, up to quarter size, covered the ground.

Hail in ITASCA, MINNESOTA
From 07-JUN-11 00:42:00 to 07-JUN-11 00:42:00 (CST-6)
Location: COHASSET
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ITASCA, MINNESOTA
From 07-JUN-11 00:50:00 to 07-JUN-11 00:50:00 (CST-6)
Location: GRAND RAPIDS ARPT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ITASCA, MINNESOTA
From 07-JUN-11 00:55:00 to 07-JUN-11 00:55:00 (CST-6)
Location: GRAND RAPIDS ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail fell for 5 to 10 minutes.

Hail in ST. LOUIS, MINNESOTA
From 07-JUN-11 01:55:00 to 07-JUN-11 01:55:00 (CST-6)
Location: DULUTH INTL ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail fell for five minutes.

Hail in ITASCA, MINNESOTA
From 07-JUN-11 03:05:00 to 07-JUN-11 03:05:00 (CST-6)
Location: BIGFORK
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A wind gust of 30 knots was also measured.

Hail in CASS, MINNESOTA
From 06-JUN-11 17:05:00 to 06-JUN-11 17:05:00 (CST-6)
Location: HACKENSACK
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CROW WING, MINNESOTA
From 06-JUN-11 17:15:00 to 06-JUN-11 17:15:00 (CST-6)
Location: EMILY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CASS, MINNESOTA
From 06-JUN-11 17:22:00 to 06-JUN-11 17:22:00 (CST-6)
Location: HACKENSACK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CASS, MINNESOTA
From 06-JUN-11 17:26:00 to 06-JUN-11 17:26:00 (CST-6)
Location: HACKENSACK
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CASS, MINNESOTA
From 06-JUN-11 17:28:00 to 06-JUN-11 17:28:00 (CST-6)
Location: PONTORIA
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CASS, MINNESOTA
From 06-JUN-11 17:35:00 to 06-JUN-11 17:35:00 (CST-6)
Location: BREVIK
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CROW WING, MINNESOTA
From 06-JUN-11 18:02:00 to 06-JUN-11 18:02:00 (CST-6)
Location: EMILY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CROW WING, MINNESOTA
From 06-JUN-11 18:05:00 to 06-JUN-11 18:05:00 (CST-6)
Location: EMILY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CROW WING, MINNESOTA
From 06-JUN-11 18:19:00 to 06-JUN-11 18:19:00 (CST-6)
Location: EMILY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CROW WING, MINNESOTA
From 06-JUN-11 18:19:00 to 06-JUN-11 18:19:00 (CST-6)
Location: EMILY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ITASCA, MINNESOTA
From 07-JUN-11 00:40:00 to 07-JUN-11 00:40:00 (CST-6)
Location: COHASSET
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public