An approaching cold front interacting with an extremely unstable airmass triggered a widespread outbreak of severe weather across west and central Upper Michigan from late afternoon on the 28th to just after sunrise on the 29th. Of the 13 counties in west and central Upper Michigan, only Alger and Keweenaw counties escaped without severe weather, as there were at least 40 individual reports of damaging wind or large hail during the event.  The storms also produced torrential downpours and minor flooding over Gogebic County during the early morning hours of the 29th.

Thunderstorm Wind in MARQUETTE, MICHIGAN
From 28-JUL-06 19:42:00 to 28-JUL-06 19:42:00 (EST)
Location: MARQUETTE
Magnitude: 55 EG
Reported by: NWS EMPLOYEE(OFF DUTY)

Trees down along paths.

Thunderstorm Wind in ONTONAGON, MICHIGAN
From 28-JUL-06 20:15:00 to 28-JUL-06 20:15:00 (EST)
Location: TROUT CREEK
Magnitude: 55 EG
Reported by: NWS EMPLOYEE(OFF DUTY)

Ten-inch diameter tree snapped along Highway M-28, a couple of metal TV attennas down.

Hail in MARQUETTE, MICHIGAN
From 28-JUL-06 18:56:00 to 28-JUL-06 18:56:00 (EST)
Location: ISHPEMING
Magnitude: 1.25 
Reported by: GENERAL PUBLIC

Hail in DICKINSON, MICHIGAN
From 28-JUL-06 19:15:00 to 28-JUL-06 19:15:00 (CST)
Location: CHANNING
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Hail in SCHOOLCRAFT, MICHIGAN
From 28-JUL-06 20:20:00 to 28-JUL-06 20:20:00 (EST)
Location: COOKS
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in ONTONAGON, MICHIGAN
From 28-JUL-06 19:00:00 to 28-JUL-06 19:00:00 (EST)
Location: PAULDING
Magnitude: 50 EG
Reported by: GENERAL PUBLIC

Four to five-inch diameter trees down at Bond Falls Campground.

Hail in IRON, MICHIGAN
From 28-JUL-06 18:27:00 to 28-JUL-06 18:27:00 (CST)
Location: ELMWOOD
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in DICKINSON, MICHIGAN
From 28-JUL-06 14:35:00 to 28-JUL-06 14:35:00 (CST)
Location: SAGOLA
Magnitude: 1.50 
Reported by: TRAINED SPOTTER

Hail in DICKINSON, MICHIGAN
From 28-JUL-06 15:10:00 to 28-JUL-06 15:10:00 (CST)
Location: NORWAY
Magnitude: 1.00 
Reported by: AMATEUR RADIO

Thunderstorm Wind in DELTA, MICHIGAN
From 28-JUL-06 15:55:00 to 28-JUL-06 15:55:00 (EST)
Location: GARDEN
Magnitude: 55 EG
Property damage: 3K
Reported by: GENERAL PUBLIC

Trees down on power lines.

Hail in SCHOOLCRAFT, MICHIGAN
From 28-JUL-06 16:05:00 to 28-JUL-06 16:05:00 (EST)
Location: THOMPSON
Magnitude: 1.00 
Reported by: GENERAL PUBLIC

Quarter-sized hail reported.

Hail in GOGEBIC, MICHIGAN
From 28-JUL-06 15:51:00 to 28-JUL-06 15:51:00 (CST)
Location: IRONWOOD
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in HOUGHTON, MICHIGAN
From 28-JUL-06 18:00:00 to 28-JUL-06 18:00:00 (EST)
Location: KENTON
Magnitude: 60 EG
Property damage: 5K
Reported by: TRAINED SPOTTER

Many large trees down, one on hood of truck.

Hail in GOGEBIC, MICHIGAN
From 28-JUL-06 17:38:00 to 28-JUL-06 17:38:00 (CST)
Location: IRONWOOD
Magnitude: 2.00 
Reported by: TRAINED SPOTTER

Hail in ONTONAGON, MICHIGAN
From 28-JUL-06 18:50:00 to 28-JUL-06 18:50:00 (EST)
Location: EWEN
Magnitude: 0.75 
Reported by: GENERAL PUBLIC

Hail in BARAGA, MICHIGAN
From 28-JUL-06 18:25:00 to 28-JUL-06 18:25:00 (EST)
Location: COVINGTON
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail lasted for ten minutes.

Hail in BARAGA, MICHIGAN
From 28-JUL-06 18:51:00 to 28-JUL-06 18:51:00 (EST)
Location: THREE LAKES
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in MARQUETTE, MICHIGAN
From 28-JUL-06 18:55:00 to 28-JUL-06 18:55:00 (EST)
Location: MICHIGAMME
Magnitude: 55 EG
Reported by: GENERAL PUBLIC

Several trees down mainly south of Highway M-28.

Thunderstorm Wind in MARQUETTE, MICHIGAN
From 28-JUL-06 21:00:00 to 28-JUL-06 21:00:00 (EST)
Location: GREEN GARDENS
Magnitude: 50 EG
Reported by: GENERAL PUBLIC

Two-inch tree limbs snapped off.

Thunderstorm Wind in BARAGA, MICHIGAN
From 28-JUL-06 21:00:00 to 28-JUL-06 21:00:00 (EST)
Location: PELKIE
Magnitude: 50 EG
Reported by: TRAINED SPOTTER

Four-inch diameter trees down with small hail reported.

Thunderstorm Wind in LUCE, MICHIGAN
From 28-JUL-06 21:45:00 to 28-JUL-06 21:45:00 (EST)
Location: NEWBERRY
Magnitude: 55 EG
Reported by: TRAINED SPOTTER

Trees one foot in diameter blown down.

Thunderstorm Wind in GOGEBIC, MICHIGAN
From 29-JUL-06 04:47:00 to 29-JUL-06 04:47:00 (CST)
Location: CISCO LAKE
Magnitude: 50 EG
Reported by: TRAINED SPOTTER

Two-inch tree limbs down.

Hail in GOGEBIC, MICHIGAN
From 28-JUL-06 17:14:00 to 28-JUL-06 17:20:00 (CST)
Location: WAKEFIELD
Magnitude: 2.00 
Reported by: TRAINED SPOTTER

Hail in GOGEBIC, MICHIGAN
From 28-JUL-06 17:15:00 to 28-JUL-06 17:15:00 (CST)
Location: CISCO LAKE
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Hail in GOGEBIC, MICHIGAN
From 28-JUL-06 16:25:00 to 28-JUL-06 16:25:00 (CST)
Location: MARENISCO
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail lasted for five to ten minutes.

Thunderstorm Wind in BARAGA, MICHIGAN
From 28-JUL-06 18:30:00 to 28-JUL-06 18:50:00 (EST)
Location: COVINGTON
Magnitude: 70 EG
Property damage: 50K
Reported by: NWS STORM SURVEY

Hundreds of trees were either uprooted or snapped along a greater than 20 mile damage path. The more concentrated wind damage began near the Covington Rest Home where an outbuilding was damaged and several large tree limbs were knocked down. As the storm tracked east, numerous trees were uprooted and/or snapped mainly in an area bounded by Cemetary Road, Besonen Road and Highway M-28. Within this area, just behind the VFW building off of VFW Road, there was a localized area where nearly twenty trees were blown down.  The wind damage continued across Highway M-28 and eastward along the entire length of old M-28.  A resident near the intersection of old M-28 and Foy Road in Covington had a large spruce tree snap off and fall to the ground missing his house by inches.  Two eyewitnesses in Covington reported hail greater than the size of quarters during the peak of the storm.  Sporadic tree damage was also reported in rural areas north of King Lake Road eastward to Three Lakes.  Some tree damage was also noted along Highway M-28/US-41 in Three Lakes and a resident from near Petticoat Lake reported some tree damage.

Hail in IRON, MICHIGAN
From 28-JUL-06 17:20:00 to 28-JUL-06 17:20:00 (CST)
Location: MICHIGAMME RES
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Hail in MENOMINEE, MICHIGAN
From 28-JUL-06 16:20:00 to 28-JUL-06 16:20:00 (CST)
Location: CEDAR RIVER
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Hail lasted for five minutes.

Hail in MENOMINEE, MICHIGAN
From 28-JUL-06 16:10:00 to 28-JUL-06 16:10:00 (CST)
Location: BAGLEY
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail lasted for ten minutes.

Thunderstorm Wind in ONTONAGON, MICHIGAN
From 28-JUL-06 18:00:00 to 28-JUL-06 18:00:00 (EST)
Location: EWEN
Magnitude: 60 EG
Property damage: 4K
Reported by: TRAINED SPOTTER

Outbuildings on farm destroyed. Highway construction signs blown down.

Thunderstorm Wind in HOUGHTON, MICHIGAN
From 28-JUL-06 18:00:00 to 28-JUL-06 18:00:00 (EST)
Location: KENTON
Magnitude: 60 EG
Property damage: 5K
Reported by: TRAINED SPOTTER

Many large trees down

Hail in HOUGHTON, MICHIGAN
From 28-JUL-06 18:00:00 to 28-JUL-06 18:00:00 (EST)
Location: KENTON
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in GOGEBIC, MICHIGAN
From 28-JUL-06 16:08:00 to 28-JUL-06 16:08:00 (CST)
Location: BESSEMER
Magnitude: 1.75 
Reported by: TRAINED SPOTTER

Hail lasted for five to ten minutes.

Hail in ONTONAGON, MICHIGAN
From 28-JUL-06 17:10:00 to 28-JUL-06 17:10:00 (EST)
Location: MERRIWEATHER
Magnitude: 0.75 
Reported by: GENERAL PUBLIC

Penny-sized hail reported.

Hail in ONTONAGON, MICHIGAN
From 28-JUL-06 17:10:00 to 28-JUL-06 17:10:00 (EST)
Location: BERGLAND
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in GOGEBIC, MICHIGAN
From 28-JUL-06 17:14:00 to 28-JUL-06 17:20:00 (CST)
Location: WAKEFIELD
Magnitude: 4.00 
Property damage: .75M
Reported by: TRAINED SPOTTER

Hail up to 4 inches in diameter resulted in significant damage to roofs, siding, and automobiles.

Heavy Rain in GOGEBIC, MICHIGAN
From 29-JUL-06 02:00:00 to 29-JUL-06 06:00:00 (CST)
Location: BESSEMER
Reported by: TRAINED SPOTTER

Thunderstorms produced heavy rainfall of 4 to 6 inches over much of western Gogebic County during the early morning hours of the 29th.  Minor street flooding was reported in the Bessemer, Wakefield and Marenisco areas as well as flooding on Bingham Creek near Lake Gogebic.

Hail in SCHOOLCRAFT, MICHIGAN
From 28-JUL-06 20:23:00 to 28-JUL-06 20:23:00 (EST)
Location: COOKS
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in SCHOOLCRAFT, MICHIGAN
From 28-JUL-06 20:30:00 to 28-JUL-06 20:30:00 (EST)
Location: MANISTIQUE
Magnitude: 55 EG
Reported by: TRAINED SPOTTER

A few large trees blown down along Highway M-94 just north of the Indian River Bridge.

Hail in SCHOOLCRAFT, MICHIGAN
From 28-JUL-06 20:33:00 to 28-JUL-06 20:33:00 (EST)
Location: MANISTIQUE
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in HOUGHTON, MICHIGAN
From 28-JUL-06 20:45:00 to 28-JUL-06 20:45:00 (EST)
Location: WINONA
Magnitude: 1.00 
Reported by: PARK/FOREST SERVICE

A camp sustained hail damage.