An outflow boundary extended from southeastern Lower Michigan to northern Illinois. Mixed layer CAPE in excess of 2500 j/kg and moderate shear allowed for stronger thunderstorms to develop. As they became organized and established cold pools, the storms transitioned from hail producers to mainly producing wind damage.

Thunderstorm Wind in HILLSDALE, MICHIGAN
From 03-SEP-11 17:27:00 to 03-SEP-11 17:28:00 (EST-5)
Location: LITCHFIELD
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Amateur radio operators reported a tree down near the intersection of Hadley and Herring Road.

Thunderstorm Wind in HILLSDALE, MICHIGAN
From 03-SEP-11 17:25:00 to 03-SEP-11 17:26:00 (EST-5)
Location: ALLEN
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Amateur radio operators reported a tree down at Squires and Genesee Road. A portion of a sheet metal roof was taken off a barn at Squires and Jonesville Road.

Thunderstorm Wind in BRANCH, MICHIGAN
From 03-SEP-11 17:08:00 to 03-SEP-11 17:09:00 (EST-5)
Location: COLDWATER
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported a tree down onto a camper with two occupants. No injuries were reported. In addition, minor damage to cars and traliers in the area were reported from falling tree limbs.

Thunderstorm Wind in HILLSDALE, MICHIGAN
From 03-SEP-11 17:50:00 to 03-SEP-11 17:51:00 (EST-5)
Location: MOSCOW
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement officials reported trees and power lines down.

Thunderstorm Wind in HILLSDALE, MICHIGAN
From 03-SEP-11 17:30:00 to 03-SEP-11 17:31:00 (EST-5)
Location: LITCHFIELD
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement officials reported trees and power lines down.

Thunderstorm Wind in BRANCH, MICHIGAN
From 03-SEP-11 17:00:00 to 03-SEP-11 17:01:00 (EST-5)
Location: COLDWATER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials estimated a 60 mph wind gust in Coldwater.

Hail in ST. JOSEPH, MICHIGAN
From 03-SEP-11 16:15:00 to 03-SEP-11 16:16:00 (EST-5)
Location: CENTREVILLE
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HILLSDALE, MICHIGAN
From 03-SEP-11 17:20:00 to 03-SEP-11 17:21:00 (EST-5)
Location: ALLEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported quarter size hail at the corner of Jonesville and Squires Road.

Hail in BRANCH, MICHIGAN
From 03-SEP-11 17:23:00 to 03-SEP-11 17:24:00 (EST-5)
Location: QUINCY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. JOSEPH, MICHIGAN
From 03-SEP-11 16:27:00 to 03-SEP-11 16:28:00 (EST-5)
Location: KIRSCH MUNI ARPT
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Local fire officials reported a tree down onto a car on M-66, just south of Maystead Road.

Thunderstorm Wind in ST. JOSEPH, MICHIGAN
From 03-SEP-11 16:35:00 to 03-SEP-11 16:36:00 (EST-5)
Location: FAWN RIVER
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement officials reported a tree down onto power lines.

Thunderstorm Wind in BRANCH, MICHIGAN
From 03-SEP-11 17:00:00 to 03-SEP-11 17:01:00 (EST-5)
Location: COLDWATER ARPT
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported a tree down onto a road west of Coldwater.

Thunderstorm Wind in BRANCH, MICHIGAN
From 03-SEP-11 17:10:00 to 03-SEP-11 17:11:00 (EST-5)
Location: HODUNK
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported numerous trees down across the northern half of the county.

Thunderstorm Wind in HILLSDALE, MICHIGAN
From 03-SEP-11 17:35:00 to 03-SEP-11 17:36:00 (EST-5)
Location: LITCHFIELD
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported two trees down.