A very unstable airmass coupled with a stalled out front was enough to fuel the development of two extremely intense thunderstorms. One of the storms managed to go from Mount Pleasant all the way to eastern Oakland County. The storm in Midland County became so intense that it prompted the issuance of a Tornado Warning. National Weather Service field surveys identified damages consistent with intense straight-line winds associated with thunderstorm downbursts. The Sanford area was hardest hit with many homes suffering damages from falling trees. Many local businesses in Sanford and Midland implemented tornado safety plans, moving customers to designated shelter areas. St Charles in Saginaw County was another area hit hard from downburst winds approaching 80 MPH. Total damages from the entire event approached nearly a quarter of a million dollars.

Hail in MIDLAND, MICHIGAN
From 18-JUL-07 16:45:00 to 18-JUL-07 16:45:00 (EST-5)
Location: MIDLAND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in MIDLAND, MICHIGAN
From 18-JUL-07 16:43:00 to 18-JUL-07 16:43:00 (EST-5)
Location: MIDLAND
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported a tree down on the northwest side of Midland.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 18-JUL-07 19:06:00 to 18-JUL-07 19:06:00 (EST-5)
Location: MERRILL
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a large tree down.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 18-JUL-07 19:36:00 to 18-JUL-07 19:36:00 (EST-5)
Location: ST CHARLES
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A National Weather Service field survey confirmed that 70 to 80 MPH straight line winds blew down numerous large trees. Several homes were damaged from the falling trees.

Hail in MIDLAND, MICHIGAN
From 18-JUL-07 16:43:00 to 18-JUL-07 16:43:00 (EST-5)
Location: MIDLAND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MIDLAND, MICHIGAN
From 18-JUL-07 16:48:00 to 18-JUL-07 16:48:00 (EST-5)
Location: MIDLAND
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm Wind in MIDLAND, MICHIGAN
From 18-JUL-07 16:28:00 to 18-JUL-07 16:28:00 (EST-5)
Location: SANFORD
Magnitude: 70.00 EG
Property damage: 60.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service field survey confirmed that straight line winds as high as 80 MPH blew down numerous large trees, including 10 huge oak trees on M-30 near Dague Road. These trees caused significant damages after falling on one family's home, pole barn, car and truck. Total damages were estimated at $60K.

Thunderstorm Wind in GENESEE, MICHIGAN
From 18-JUL-07 18:01:00 to 18-JUL-07 18:01:00 (EST-5)
Location: FLUSHING
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported large limbs down.

Thunderstorm Wind in GENESEE, MICHIGAN
From 18-JUL-07 18:41:00 to 18-JUL-07 18:41:00 (EST-5)
Location: FLINT
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A trained spotter reported a large tree down.

Thunderstorm Wind in LAPEER, MICHIGAN
From 18-JUL-07 18:45:00 to 18-JUL-07 18:45:00 (EST-5)
Location: HADLEY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a large tree down and estimated the wind gusts at 60 MPH.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 18-JUL-07 17:48:00 to 18-JUL-07 17:48:00 (EST-5)
Location: BRIDGEPORT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported a tree down in Bridgeport.

Thunderstorm Wind in GENESEE, MICHIGAN
From 18-JUL-07 17:56:00 to 18-JUL-07 17:56:00 (EST-5)
Location: FLUSHING
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported several tree branches 6 inches in diameter down.

Thunderstorm Wind in GENESEE, MICHIGAN
From 18-JUL-07 18:00:00 to 18-JUL-07 18:00:00 (EST-5)
Location: SWARTZ CREEK
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported several large trees down.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 18-JUL-07 17:14:00 to 18-JUL-07 17:14:00 (EST-5)
Location: MARION SPGS
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported several large trees down on Harris Road near Meridian Road in Chapin Township. A few homes suffered minor damages.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 18-JUL-07 17:14:00 to 18-JUL-07 17:14:00 (EST-5)
Location: BRANT
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down on power lines.

Thunderstorm Wind in SHIAWASSEE, MICHIGAN
From 18-JUL-07 17:44:00 to 18-JUL-07 17:44:00 (EST-5)
Location: NEW LOTHROP
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A National Weather Service field survey confirmed that straight line winds blew down a large tree and many large tree branches.

Hail in OAKLAND, MICHIGAN
From 18-JUL-07 19:20:00 to 18-JUL-07 19:20:00 (EST-5)
Location: LAKE ORION
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Lightning in SAGINAW, MICHIGAN
From 18-JUL-07 19:20:00 to 18-JUL-07 19:20:00 (EST-5)
Location: HEMLOCK
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported a house struck by lightning.

Thunderstorm Wind in MIDLAND, MICHIGAN
From 18-JUL-07 16:30:00 to 18-JUL-07 16:30:00 (EST-5)
Location: SANFORD
Magnitude: 61.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service field survey confirmed that straight line winds as high as 70 MPH blew down numerous large trees. At least 10 homes on Peterson Drive suffered damage from falling trees, some suffering heavy damage. Total damages to the homes were estimated at roughly $75K.

Hail in MIDLAND, MICHIGAN
From 18-JUL-07 16:20:00 to 18-JUL-07 16:20:00 (EST-5)
Location: EDENVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MIDLAND, MICHIGAN
From 18-JUL-07 16:35:00 to 18-JUL-07 16:35:00 (EST-5)
Location: SANFORD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MIDLAND, MICHIGAN
From 18-JUL-07 16:20:00 to 18-JUL-07 16:20:00 (EST-5)
Location: SANFORD
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter