A cold front swept through Southeast Michigan producing several severe thunderstorms north of M-59.

Hail in HURON, MICHIGAN
From 21-SEP-10 20:23:00 to 21-SEP-10 20:23:00 (EST-5)
Location: QUARRY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MIDLAND, MICHIGAN
From 21-SEP-10 21:30:00 to 21-SEP-10 21:30:00 (EST-5)
Location: MIDLAND
Magnitude: 54.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous tress and powerlines were reported down.

Thunderstorm Wind in MIDLAND, MICHIGAN
From 21-SEP-10 21:32:00 to 21-SEP-10 21:32:00 (EST-5)
Location: LARKIN
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Over two dozen trees were blown down, with larger ones around 18 inches in diameter.

Thunderstorm Wind in SHIAWASSEE, MICHIGAN
From 21-SEP-10 21:30:00 to 21-SEP-10 21:30:00 (EST-5)
Location: PERRY
Magnitude: 54.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Several trees and power lines were reported down.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 21-SEP-10 21:35:00 to 21-SEP-10 21:35:00 (EST-5)
Location: CHESANING
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Large tree limbs and power lines reported down.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 21-SEP-10 21:40:00 to 21-SEP-10 21:40:00 (EST-5)
Location: SHIELDS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated a 60 mph thunderstorm wind gust.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 21-SEP-10 21:45:00 to 21-SEP-10 21:45:00 (EST-5)
Location: SAGINAW
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Large tree limbs and power line were reported down.

Thunderstorm Wind in LIVINGSTON, MICHIGAN
From 21-SEP-10 21:48:00 to 21-SEP-10 21:48:00 (EST-5)
Location: HOWELL ARPT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in BAY, MICHIGAN
From 21-SEP-10 21:50:00 to 21-SEP-10 21:50:00 (EST-5)
Location: BAY CITY
Magnitude: 54.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees fell down onto power lines.

Thunderstorm Wind in GENESEE, MICHIGAN
From 21-SEP-10 21:59:00 to 21-SEP-10 21:59:00 (EST-5)
Location: (FNT)BISHOP ARPT FLI
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in GENESEE, MICHIGAN
From 21-SEP-10 21:59:00 to 21-SEP-10 21:59:00 (EST-5)
Location: (FNT)BISHOP ARPT FLI
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in TUSCOLA, MICHIGAN
From 21-SEP-10 22:05:00 to 21-SEP-10 22:05:00 (EST-5)
Location: MILLINGTON
Magnitude: 54.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines reported down.

Thunderstorm Wind in GENESEE, MICHIGAN
From 21-SEP-10 22:05:00 to 21-SEP-10 22:05:00 (EST-5)
Location: ARGENTINE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A large tree was reported blown down onto a road.

Thunderstorm Wind in GENESEE, MICHIGAN
From 21-SEP-10 22:05:00 to 21-SEP-10 22:05:00 (EST-5)
Location: CLIO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A large tree was blown down which struck a man on a motorcyle.

Thunderstorm Wind in GENESEE, MICHIGAN
From 21-SEP-10 22:05:00 to 21-SEP-10 22:05:00 (EST-5)
Location: MT MORRIS
Magnitude: 54.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Three large trees were blown down.

Thunderstorm Wind in GENESEE, MICHIGAN
From 21-SEP-10 22:10:00 to 21-SEP-10 22:10:00 (EST-5)
Location: RUSSELLVILLE
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple trees were reported down.

Thunderstorm Wind in LAPEER, MICHIGAN
From 21-SEP-10 22:20:00 to 21-SEP-10 22:20:00 (EST-5)
Location: LAPEER
Magnitude: 54.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines were reported down.

Thunderstorm Wind in TUSCOLA, MICHIGAN
From 21-SEP-10 22:15:00 to 21-SEP-10 22:15:00 (EST-5)
Location: MAYVILLE
Magnitude: 54.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines reported down.

Thunderstorm Wind in TUSCOLA, MICHIGAN
From 21-SEP-10 22:25:00 to 21-SEP-10 22:25:00 (EST-5)
Location: KINGSTON
Magnitude: 54.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines reported down.

Thunderstorm Wind in SANILAC, MICHIGAN
From 21-SEP-10 22:55:00 to 21-SEP-10 22:55:00 (EST-5)
Location: CROSWELL
Magnitude: 54.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees reported down.

Thunderstorm Wind in HURON, MICHIGAN
From 21-SEP-10 22:37:00 to 21-SEP-10 22:37:00 (EST-5)
Location: BAD AXE
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in LAPEER, MICHIGAN
From 21-SEP-10 22:35:00 to 21-SEP-10 22:35:00 (EST-5)
Location: ATTICA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tree was blown down and blocked the intersection of Newark and Lake Pleasant Roads. Multiple trees were also down elsewhere.