A strong cold front moved through Southeast Michigan during the peak heating of the day and led to another big event, especially for late August. Severe thunderstorms with large hail and damaging wind gusts impacted nearly all of Southeast Lower Michigan, including all neighboring marine areas. A couple of storms across the Thumb showed rotation and prompted the issuance of a couple of tornado warnings. No tornadoes were reported. Lightning struck the National Weather Service office during this event, causing total damages in excess of $15K.

Thunderstorm Wind in TUSCOLA, MICHIGAN
From 29-AUG-07 14:10:00 to 29-AUG-07 14:10:00 (EST-5)
Location: FAIRGROVE
Magnitude: 50.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported many tree branches 3 to 5 inches in diameter down in Fairgrove. The local Police Chief reported the heaviest damage just outside the village limits where trees and power lines were down. A temporary storage shed was also destroyed by the wind.

Thunderstorm Wind in LAPEER, MICHIGAN
From 29-AUG-07 16:45:00 to 29-AUG-07 16:45:00 (EST-5)
Location: LUM
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

The local newspaper reported trees and power lines down across Little Cedar Creek Drive.

Lightning in LAPEER, MICHIGAN
From 29-AUG-07 17:00:00 to 29-AUG-07 17:00:00 (EST-5)
Location: LUM
Property damage: 175.00K
Crop damage: 0.00K
Reported by: Newspaper

The local newspaper reported a home destroyed by fire after being struck by lightning during a violent thunderstorm. Total property damages were estimated at roughly $175K.

Hail in GENESEE, MICHIGAN
From 29-AUG-07 15:45:00 to 29-AUG-07 15:45:00 (EST-5)
Location: CLIO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GENESEE, MICHIGAN
From 29-AUG-07 15:45:00 to 29-AUG-07 15:45:00 (EST-5)
Location: CLIO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LAPEER, MICHIGAN
From 29-AUG-07 16:45:00 to 29-AUG-07 16:45:00 (EST-5)
Location: IMLAY CITY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast media reported large tree branches down.

Thunderstorm Wind in WAYNE, MICHIGAN
From 29-AUG-07 18:45:00 to 29-AUG-07 18:45:00 (EST-5)
Location: WYANDOTTE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported trees and power lines down.

Thunderstorm Wind in TUSCOLA, MICHIGAN
From 29-AUG-07 14:15:00 to 29-AUG-07 14:15:00 (EST-5)
Location: CARO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated the wind gusts at 60 MPH.

Thunderstorm Wind in GENESEE, MICHIGAN
From 29-AUG-07 15:52:00 to 29-AUG-07 15:52:00 (EST-5)
Location: MT MORRIS
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A trained spotter estimated the wind gusts at 70 MPH.

Thunderstorm Wind in WAYNE, MICHIGAN
From 29-AUG-07 18:45:00 to 29-AUG-07 18:45:00 (EST-5)
Location: LINCOLN PARK
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured a 58 MPH wind gust.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 29-AUG-07 15:38:00 to 29-AUG-07 15:38:00 (EST-5)
Location: BIRCH RUN
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported a few trees down.

Thunderstorm Wind in GENESEE, MICHIGAN
From 29-AUG-07 15:52:00 to 29-AUG-07 15:52:00 (EST-5)
Location: MT MORRIS
Magnitude: 55.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A trained spotter reported a large tree and power lines down at the intersection of Roosevelt and Saginaw Roads.

Hail in SAGINAW, MICHIGAN
From 29-AUG-07 14:10:00 to 29-AUG-07 14:10:00 (EST-5)
Location: FRANKENMUTH
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SANILAC, MICHIGAN
From 29-AUG-07 14:42:00 to 29-AUG-07 14:42:00 (EST-5)
Location: ARGYLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GENESEE, MICHIGAN
From 29-AUG-07 15:30:00 to 29-AUG-07 15:30:00 (EST-5)
Location: MONTROSE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Lightning in OAKLAND, MICHIGAN
From 29-AUG-07 17:48:00 to 29-AUG-07 17:48:00 (EST-5)
Location: OXBOW
Property damage: 16.00K
Crop damage: 0.00K
Reported by: NWS Employee

Lightning struck the National Weather Service office. Total damages to upper air equipment, Doppler Radar, telephone services, and miscellaneous items were estimated at approximately $16K.

Thunderstorm Wind in SANILAC, MICHIGAN
From 29-AUG-07 14:31:00 to 29-AUG-07 14:31:00 (EST-5)
Location: NEW GREENLEAF
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported large tree branches down.

Thunderstorm Wind in TUSCOLA, MICHIGAN
From 29-AUG-07 14:27:00 to 29-AUG-07 14:27:00 (EST-5)
Location: CASS CITY
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a tree down.

Thunderstorm Wind in TUSCOLA, MICHIGAN
From 29-AUG-07 14:30:00 to 29-AUG-07 14:30:00 (EST-5)
Location: CASS CITY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported trees and power lines down.

Thunderstorm Wind in GENESEE, MICHIGAN
From 29-AUG-07 15:53:00 to 29-AUG-07 15:53:00 (EST-5)
Location: MT MORRIS
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A trained spotter reported a large tree and several tree branches down.

Thunderstorm Wind in GENESEE, MICHIGAN
From 29-AUG-07 15:45:00 to 29-AUG-07 15:45:00 (EST-5)
Location: CLIO
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trained spotters reported trees 2 to 3 feet in diameter down.

Thunderstorm Wind in LAPEER, MICHIGAN
From 29-AUG-07 16:46:00 to 29-AUG-07 16:46:00 (EST-5)
Location: NORTH BRANCH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported large tree branches down.

Thunderstorm Wind in MONROE, MICHIGAN
From 29-AUG-07 18:42:00 to 29-AUG-07 18:42:00 (EST-5)
Location: CARLETON
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported a tree down.

Hail in ST. CLAIR, MICHIGAN
From 29-AUG-07 17:31:00 to 29-AUG-07 17:31:00 (EST-5)
Location: WADNAMS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. CLAIR, MICHIGAN
From 29-AUG-07 17:02:00 to 29-AUG-07 17:02:00 (EST-5)
Location: CAPAC
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a tree branch 8 inches in diameter down.

Thunderstorm Wind in SANILAC, MICHIGAN
From 29-AUG-07 14:42:00 to 29-AUG-07 14:42:00 (EST-5)
Location: ARGYLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated the wind gusts at 60 MPH.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 29-AUG-07 15:03:00 to 29-AUG-07 15:03:00 (EST-5)
Location: BURT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated the wind gusts at 60 MPH.

Thunderstorm Wind in GENESEE, MICHIGAN
From 29-AUG-07 16:01:00 to 29-AUG-07 16:01:00 (EST-5)
Location: GRAND BLANC
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured a 62 MPH wind gust.

Thunderstorm Wind in LIVINGSTON, MICHIGAN
From 29-AUG-07 17:20:00 to 29-AUG-07 17:20:00 (EST-5)
Location: HOWELL
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A trained spotter reported a tree and power lines down.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 29-AUG-07 15:25:00 to 29-AUG-07 15:25:00 (EST-5)
Location: OAKLEY
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and power lines down.

Thunderstorm Wind in SHIAWASSEE, MICHIGAN
From 29-AUG-07 16:03:00 to 29-AUG-07 16:03:00 (EST-5)
Location: JUDDVILLE
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and power lines down.

Thunderstorm Wind in WASHTENAW, MICHIGAN
From 29-AUG-07 17:40:00 to 29-AUG-07 17:40:00 (EST-5)
Location: SALEM
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down.