A round of strong to severe thunderstorms accompanied by very heavy rainfall resulted in significant flash flooding across Mason and Lake counties.

Thunderstorm Wind in CALHOUN, MICHIGAN
From 13-JUN-08 15:32:00 to 13-JUN-08 15:32:00 (EST-5)
Location: MARSHALL
Magnitude: 52.00 EG
Reported by: Emergency Manager

Several trees were blown down at 17 1/2 Mile road and G avenue.

Thunderstorm Wind in CALHOUN, MICHIGAN
From 13-JUN-08 15:33:00 to 13-JUN-08 15:33:00 (EST-5)
Location: MARSHALL ARPT
Magnitude: 52.00 EG
Reported by: Emergency Manager

Several trees were blown down at 20 Mile road and B avenue.

Thunderstorm Wind in CALHOUN, MICHIGAN
From 13-JUN-08 15:25:00 to 13-JUN-08 15:25:00 (EST-5)
Location: MARSHALL
Magnitude: 60.00 EG
Reported by: Emergency Manager

A semi truck was blown over on Interstate 94 at mile marker 110.

Thunderstorm Wind in CALHOUN, MICHIGAN
From 13-JUN-08 15:49:00 to 13-JUN-08 15:49:00 (EST-5)
Location: MARSHALL
Magnitude: 52.00 EG
Reported by: Emergency Manager

A power pole was snapped and trees were blown down at 18 1/2 Mile road and G Avenue.

Thunderstorm Wind in MUSKEGON, MICHIGAN
From 13-JUN-08 02:47:00 to 13-JUN-08 02:47:00 (EST-5)
Location: MUSKEGON LAKE
Magnitude: 52.00 EG
Reported by: Law Enforcement

Several trees and power lines were blown down.

Hail in OSCEOLA, MICHIGAN
From 12-JUN-08 23:25:00 to 12-JUN-08 23:25:00 (EST-5)
Location: TUSTIN
Magnitude: 1.00 
Reported by: Broadcast Media

The broadcast media reported one inch diameter hail just west of Tustin.

Flash Flood in LAKE, MICHIGAN
From 13-JUN-08 02:30:00 to 13-JUN-08 14:00:00 (EST-5)
Location: PEACOCK
Flood cause: Heavy Rain
Property damage: 2.00M
Crop damage: 500.00K
Reported by: Law Enforcement

Damage resulting from flash flooding included a 30 foot wide by 10 foot deep sinkhole which developed near the 18 Mile bridge five miles west of Irons.  Numerous roads were washed out and several mudslides were also reported.
Rainfall totals across the areas hardest hit ranged from five to eleven inches, all of which fell in only a six to eight hour time period. Damage to public infrastructure was estimated at about two million dollars, mainly due to all of the road and bridge washouts. A presidential disaster declaration for flooding was also issued for Lake county.

Flash Flood in MASON, MICHIGAN
From 13-JUN-08 02:00:00 to 13-JUN-08 14:00:00 (EST-5)
Location: HAMLIN LAKE LAKE
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 500.00K
Reported by: Trained Spotter

The Michigan Department of Transportation shut down U.S. 31 from Manistee to Scottville when the road washed out.  There were four washouts on M-116 on the drive to Ludington State Park.  One of those washouts was eight feet deep.  The Department of Natural Resources evacuated and then closed Ludington State Park due to flooding and concerns about the Hamlin Lake Dam. Mason county officials shut down 47 roads due to flooding and washouts.
Damage to public infrastructure (mostly road and bridge washouts) was estimated to have reached close to three million dollars for this event.  A presidential disaster declaration for flooding was issued for Mason county.  The hardest hit areas received up to eleven inches of rain in only six to eight hours.

Flash Flood in OSCEOLA, MICHIGAN
From 13-JUN-08 06:34:00 to 13-JUN-08 14:41:00 (EST-5)
Location: TUSTIN
Flood cause: Heavy Rain
Property damage: 1.00M
Crop damage: 250.00K
Reported by: Emergency Manager

An emergency manager reported that the Mackinaw trail just south of the Osceola and Wexford county line was washed out.  Other small roadways and bridges were also closed due to washouts.  A presidential disaster declaration was issued for Osceola county for the flooding.  Damage to public infrastructure (mostly road and bridge washouts) was estimated at up to around one million dollars for this event.