In the late afternoon and evening of September 3, 2011 several thunderstorms fired up ahead of a cold front that was draped across lower Michigan. Outflow boundaries from previous storms in the day provided the lift required to set these storms in motion. Many areas saw brief heavy downpours, but the areas hardest hit with strong winds and hail were along I-94 from Ann Arbor to downtown Detroit, and from Huntington Woods to Madison Heights. About 100,000 DTE customers lost power due to the storms.

Thunderstorm Wind in WAYNE, MICHIGAN
From 03-SEP-11 17:58:00 to 03-SEP-11 17:58:00 (EST-5)
Location: ECORSE JCT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree was reported blown down.

Thunderstorm Wind in OAKLAND, MICHIGAN
From 03-SEP-11 19:44:00 to 03-SEP-11 19:44:00 (EST-5)
Location: HUNTINGTON WOODS
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Numerous trees reported down.

Thunderstorm Wind in WASHTENAW, MICHIGAN
From 03-SEP-11 18:50:00 to 03-SEP-11 18:50:00 (EST-5)
Location: ANN ARBOR
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A 4 inch diameter tree limb was reported down.

Thunderstorm Wind in WASHTENAW, MICHIGAN
From 03-SEP-11 18:46:00 to 03-SEP-11 18:46:00 (EST-5)
Location: DOVER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A large tree was reported blown down.

Thunderstorm Wind in WASHTENAW, MICHIGAN
From 03-SEP-11 19:02:00 to 03-SEP-11 19:02:00 (EST-5)
Location: SCIO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A 8 inch diameter tree was reported down.

Thunderstorm Wind in WAYNE, MICHIGAN
From 03-SEP-11 17:50:00 to 03-SEP-11 17:50:00 (EST-5)
Location: SOUTHGATE
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Wind damage reported to structures at the River Rouge Days Festival, minor injuries occurred. Multiple trees and festival tents blown down.

Thunderstorm Wind in LAPEER, MICHIGAN
From 03-SEP-11 23:25:00 to 03-SEP-11 23:25:00 (EST-5)
Location: MILLVILLE
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees reported down in Oregon Township.

Thunderstorm Wind in ST. CLAIR, MICHIGAN
From 03-SEP-11 20:15:00 to 03-SEP-11 20:15:00 (EST-5)
Location: ANCHORVILLE
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

Trees and powerlines reported down in Ira Township, some of which fell onto houses.

Thunderstorm Wind in OAKLAND, MICHIGAN
From 03-SEP-11 19:33:00 to 03-SEP-11 19:41:00 (EST-5)
Location: HAZEL PARK
Magnitude: 65.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Numerous trees and large tree limbs down along a 2 mile swath.

Thunderstorm Wind in SANILAC, MICHIGAN
From 03-SEP-11 15:50:00 to 03-SEP-11 15:50:00 (EST-5)
Location: LEXINGTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree was reported blown down.

Thunderstorm Wind in OAKLAND, MICHIGAN
From 03-SEP-11 19:50:00 to 03-SEP-11 19:50:00 (EST-5)
Location: CLAWSON
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and large limbs reported down.

Thunderstorm Wind in MIDLAND, MICHIGAN
From 03-SEP-11 09:40:00 to 03-SEP-11 09:40:00 (EST-5)
Location: MIDLAND
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and powerlines reported down.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 03-SEP-11 09:42:00 to 03-SEP-11 09:42:00 (EST-5)
Location: HEMLOCK
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerlines were reported down.

Thunderstorm Wind in WASHTENAW, MICHIGAN
From 03-SEP-11 18:41:00 to 03-SEP-11 18:41:00 (EST-5)
Location: ROWES CORNER
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and tree limbs reported down, along with powerlines.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 03-SEP-11 10:07:00 to 03-SEP-11 10:07:00 (EST-5)
Location: SAGINAW
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerlines reported blown down.