Two rounds of severe thunderstorms affected central and northeastern Minnesota.  The first round occurred in the morning.  An area of thunderstorms developed across central Minnesota, and quickly morphed into a squall line as it raced across the central part of the state.  Damaging winds were noted just west of the Duluth area.
The second round of thunderstorms developed by mid afternoon, producing damaging winds and large hail in the Brainerd Lakes region.  A weak tornado touched down briefly near the Pathfinder Village area of Pine County.

Hail in CROW WING, MINNESOTA
From 14-JUL-10 14:36:00 to 14-JUL-10 14:36:00 (CST-6)
Location: EMILY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CARLTON, MINNESOTA
From 14-JUL-10 08:02:00 to 14-JUL-10 08:02:00 (CST-6)
Location: CROMWELL
Magnitude: 50.00 EG
Property damage: 2.00K
Reported by: Law Enforcement

Trees were blown down onto Minnesota Highway 73.

Thunderstorm Wind in CARLTON, MINNESOTA
From 14-JUL-10 08:25:00 to 14-JUL-10 08:25:00 (CST-6)
Location: SCANLON
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: Amateur Radio

Trees were blown down.

Thunderstorm Wind in CARLTON, MINNESOTA
From 14-JUL-10 08:22:00 to 14-JUL-10 08:22:00 (CST-6)
Location: CLOQUET
Magnitude: 52.00 EG
Property damage: 2.00K
Reported by: Amateur Radio

Trees were blown down in and around Cloquet, including a 40-foot pine tree.

Thunderstorm Wind in CARLTON, MINNESOTA
From 14-JUL-10 08:25:00 to 14-JUL-10 08:25:00 (CST-6)
Location: CLOQUET
Magnitude: 52.00 EG
Property damage: 4.00K
Reported by: Law Enforcement

Power lines and trees were blown down in and around Cloquet.  Many small tree limbs were also blown down.

Thunderstorm Wind in CARLTON, MINNESOTA
From 14-JUL-10 08:12:00 to 14-JUL-10 08:12:00 (CST-6)
Location: CLOQUET
Magnitude: 50.00 EG
Property damage: 2.00K
Reported by: Public

Large trees were blown down near Big Lake.

Thunderstorm Wind in CROW WING, MINNESOTA
From 14-JUL-10 14:27:00 to 14-JUL-10 14:27:00 (CST-6)
Location: BRAINERD
Magnitude: 51.00 MG
Reported by: ASOS

Thunderstorm Wind in CROW WING, MINNESOTA
From 14-JUL-10 14:30:00 to 14-JUL-10 14:30:00 (CST-6)
Location: BRAINERD
Magnitude: 52.00 EG
Property damage: 6.00K
Reported by: Law Enforcement

Many trees and power lines were blown down.

Thunderstorm Wind in CROW WING, MINNESOTA
From 14-JUL-10 14:25:00 to 14-JUL-10 14:25:00 (CST-6)
Location: BRAINERD
Magnitude: 52.00 EG
Property damage: 6.00K
Reported by: Trained Spotter

Many large oak trees were blown down.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 14-JUL-10 08:32:00 to 14-JUL-10 08:32:00 (CST-6)
Location: PROCTOR
Magnitude: 50.00 EG
Reported by: NWS Employee

Trees were blown down along the Willard Munger State Trail.

Tornado in PINE, MINNESOTA
From 14-JUL-10 17:15:00 to 14-JUL-10 17:15:00 (CST-6)
Location: CLOVERDALE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tornado touched down briefly.

Thunderstorm Wind in CROW WING, MINNESOTA
From 14-JUL-10 06:45:00 to 14-JUL-10 06:45:00 (CST-6)
Location: NISSWA
Magnitude: 52.00 EG
Property damage: 2.00K
Reported by: Trained Spotter

Trees, 6-12 inches in diameter, were blown down.