Two separate bow echoes moved across western lower Michigan during the morning hours of July 11, producing numerous reports of wind damage.  The first bow echo moved onshore north of Muskegon shortly after daybreak.  The second bow echo proved to be more destructive as it raced east from northern Illinois across far southern Lake Michigan and southern lower Michigan, resulting in numerous reports of downed trees and power lines.  One person lost his life in Cutlerville when a tree fell in the garage he was in.

Thunderstorm Wind in MUSKEGON, MICHIGAN
From 11-JUL-11 06:34:00 to 11-JUL-11 07:10:00 (EST-5)
Location: WABANINGO
Magnitude: 57.00 MG
Reported by: Broadcast Media

Broadcast media in Grand Rapids reported a measured wind gust of 66 mph at the White River lighthouse five miles southwest of Whitehall as the first bow echo came onshore. A trained spotter reported that many trees were blown down in Twin Lake by wind gusts estimated at 65 mph. Numerous trees were blown down across portions of the county, particularly near to just east northeast of Muskegon.  Muskegon county emergency management reported numerous trees down at Apple avenue and US-31.

Thunderstorm Wind in OCEANA, MICHIGAN
From 11-JUL-11 06:34:00 to 11-JUL-11 06:34:00 (EST-5)
Location: HART
Magnitude: 52.00 EG
Reported by: Trained Spotter

Several trees and power lines were blown down in Hart.

Thunderstorm Wind in NEWAYGO, MICHIGAN
From 11-JUL-11 07:00:00 to 11-JUL-11 07:00:00 (EST-5)
Location: NEWAYGO
Magnitude: 52.00 EG
Reported by: State Official

Several trees and power lines were blown down in Grant, Croton, and east of White Cloud.

Thunderstorm Wind in KENT, MICHIGAN
From 11-JUL-11 07:24:00 to 11-JUL-11 07:50:00 (EST-5)
Location: JENNISON
Magnitude: 52.00 EG
Property damage: 100.00K
Reported by: Trained Spotter

Severe thunderstorm wind gusts of around 60 mph blew a large tree onto a house that did significant damage to the roof and second floor five miles east northeast of Hudsonville.  Trees also fell onto a trailer in Kent City.

Hail in MUSKEGON, MICHIGAN
From 11-JUL-11 08:51:00 to 11-JUL-11 08:51:00 (EST-5)
Location: TWIN LAKE
Magnitude: 0.75 
Reported by: Trained Spotter

A trained spotter reported that in addition to three quarters inch hail thunderstorm wind gusts blew down several trees in Twin Lake.  This occurred with an area of storms that developed during the mid morning hours just to the north of the secondary bow echo that passed by just to the south of Muskegon.

Thunderstorm Wind in OTTAWA, MICHIGAN
From 11-JUL-11 09:00:00 to 11-JUL-11 09:38:00 (EST-5)
Location: OTTAWA BEACH
Magnitude: 70.00 EG
Property damage: 2.00M
Crop damage: 0.00K
Reported by: County Official

Radar data corroborated with ground truth reports indicates that a significant bow echo came onshore in Holland at 10:25 a.m. A storm chaser estimated that it produced wind gusts of up to 80 mph.  Numerous reports of trees and power lines were received from in and near Holland and radar data indicates additional wind damage was likely east northeast to Zeeland and Jenison.  The storm blew through Jenison at 10:45 a.m.

Thunderstorm Wind in CALHOUN, MICHIGAN
From 11-JUL-11 10:05:00 to 11-JUL-11 10:40:00 (EST-5)
Location: RENTON
Magnitude: 65.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A bow echo raced east across Calhoun county during the late morning hours, weakening as it did so, but still bringing down several trees and tree limbs.

Thunderstorm Wind in ALLEGAN, MICHIGAN
From 11-JUL-11 09:16:00 to 11-JUL-11 09:50:00 (EST-5)
Location: CEDAR BLUFF
Magnitude: 70.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A bow echo raced east across Allegan county during the late morning hours, bringing down numerous trees and power lines in areas including the city of Allegan and several miles south of Holland.  Radar data suggests that downed trees were likely countywide.

Thunderstorm Wind in KALAMAZOO, MICHIGAN
From 11-JUL-11 09:38:00 to 11-JUL-11 10:05:00 (EST-5)
Location: TEXAS CORNERS
Magnitude: 65.00 EG
Property damage: 1.00M
Crop damage: 0.00K
Reported by: Trained Spotter

A bow echo raced east across Kalamazoo county during the late morning hours, bringing down numerous trees and power lines. A trained spotter reported a measured wind gust of 71 mph in Schoolcraft.  The public report lots of tree damage in and near Portage.  Radar data suggests that downed trees were likely countywide.

Thunderstorm Wind in BARRY, MICHIGAN
From 11-JUL-11 09:50:00 to 11-JUL-11 10:10:00 (EST-5)
Location: ORANGEVILLE
Magnitude: 65.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: COOP Observer

A bow echo raced east across Barry county during the late morning hours, bringing down scattered trees countywide.

Thunderstorm Wind in KENT, MICHIGAN
From 11-JUL-11 09:57:00 to 11-JUL-11 10:11:00 (EST-5)
Location: BYRON CENTER
Magnitude: 70.00 EG
Property damage: 5.00M
Crop damage: 0.00K
Reported by: Public

Radar data indicates the northern end of a strong bow echo moved east into southwestern Kent county at 10:45 a.m. and raced east northeast producing significant wind damage and exited far east central Kent county near Lowell at around 11:10 a.m.  Numerous trees and power lines were blown down and uprooted in and near towns including Cutlerville, Wyoming and Kentwood.
A 38 year old man was killed inside his garage along 68th street SE in Cutlerville when wind gusts of up to 80 mph ripped a large tree and its roots out of the ground and toppling it onto the garage, splitting it in half.  In addition, a woman suffered minor injuries when a tree fell on her home in Cutlerville.

Thunderstorm Wind in VAN BUREN, MICHIGAN
From 11-JUL-11 09:10:00 to 11-JUL-11 09:40:00 (EST-5)
Location: FOREST DUNES
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The Van Buren county sheriff's department reported numerous areas of tree damage countywide in addition to widespread power outages across the southern half of the county.  Some of the harder hit areas included Mattawan, Lawton and Hartford.  In fact 20 to 25 pine trees were blown down on one property just northeast of Lawton.  A trained spotter reported a roof was blown off a ballfield dugout and cinder blocks were blown 30 feet, also in Lawton.