Several rounds of thunderstorms occurred in the afternoon and evening, just ahead of a cold front.  The atmosphere was very unstable, and conducive to damaging winds and especially large hail.  Though most of the hail was only marginally severe, one storm produced extremely large hail - and considerable damage - in southeast Presque Isle County.

Hail in ALCONA, MICHIGAN
From 13-JUL-04 20:10:00 to 13-JUL-04 20:10:00 (EST)
Location: LINCOLN
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in OGEMAW, MICHIGAN
From 13-JUL-04 20:05:00 to 13-JUL-04 20:05:00 (EST)
Location: LUPTON
Magnitude: 54 EG
Reported by: TRAINED SPOTTER

Wind gust estimated by a spotter.

Hail in MISSAUKEE, MICHIGAN
From 13-JUL-04 15:30:00 to 13-JUL-04 15:30:00 (EST)
Location: LAKE CITY
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Hail in PRESQUE ISLE, MICHIGAN
From 13-JUL-04 14:18:00 to 13-JUL-04 14:18:00 (EST)
Location: ROGERS CITY
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in CRAWFORD, MICHIGAN
From 13-JUL-04 15:22:00 to 13-JUL-04 15:22:00 (EST)
Location: GRAYLING
Magnitude: 0.75 
Reported by: GENERAL PUBLIC

Hail covered the ground.

Thunderstorm Wind in ALCONA, MICHIGAN
From 13-JUL-04 19:55:00 to 13-JUL-04 19:55:00 (EST)
Location: LINCOLN
Magnitude: 56 EG
Reported by: TRAINED SPOTTER

Wind gust estimated by a spotter.

Hail in IOSCO, MICHIGAN
From 13-JUL-04 20:10:00 to 13-JUL-04 20:10:00 (EST)
Location: HALE
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in PRESQUE ISLE, MICHIGAN
From 13-JUL-04 17:02:00 to 13-JUL-04 17:20:00 (EST)
Location: POSEN
Magnitude: 2.75 
Property damage: 3.5M
Crop damage: 300K
Reported by: GENERAL PUBLIC

A devastating hailstorm caused extensive damage in the small town of Posen.  The hail was driven at times by wind gusts around 60 mph.  Most buildings and vehicles in the community suffered some sort of damage.  Holes were punched in roofs and siding; cars were dented, and windows broken.  Buildings that had siding damage were damaged almost exclusively on their south side.  The storm spawned hundreds of insurance claims.  A local church had to patch 300 holes in its roof.  Damage to a school roof was estimated at nearly $200,000, and a local greenhouse lost over a thousand two-foot by two-foot window panes.  One individual suffered a badly bruised back as he tried to move his vehicle to shelter.  Substantial damage was done to crops (largely potatoes, with some beans, tomatoes and corn in the mix) in nearby fields.

Thunderstorm Wind in PRESQUE ISLE, MICHIGAN
From 13-JUL-04 17:02:00 to 13-JUL-04 17:20:00 (EST)
Location: POSEN
Magnitude: 52 EG
Reported by: NEWSPAPER

Trees were downed.

Hail in OTSEGO, MICHIGAN
From 13-JUL-04 17:35:00 to 13-JUL-04 17:35:00 (EST)
Location: ELMIRA
Magnitude: 0.75 
Reported by: NWS EMPLOYEE(OFF DUTY)

Hail in CRAWFORD, MICHIGAN
From 13-JUL-04 15:56:00 to 13-JUL-04 15:56:00 (EST)
Location: GRAYLING
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Near Deerheart Valley.

Hail in ALPENA, MICHIGAN
From 13-JUL-04 16:00:00 to 13-JUL-04 16:00:00 (EST)
Location: BOLTON
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Hail in ALPENA, MICHIGAN
From 13-JUL-04 16:40:00 to 13-JUL-04 16:40:00 (EST)
Location: LONG RAPIDS
Magnitude: 0.75 
Reported by: UNKNOWN

Thunderstorm Wind in EMMET, MICHIGAN
From 13-JUL-04 16:49:00 to 13-JUL-04 16:49:00 (EST)
Location: PELLSTON
Magnitude: 52 EG
Property damage: 5K
Reported by: LAW ENFORCEMENT

Trees and power lines were downed.

Thunderstorm Wind in ALCONA, MICHIGAN
From 13-JUL-04 16:50:00 to 13-JUL-04 16:50:00 (EST)
Location: GLENNIE
Magnitude: 52 EG
Reported by: FIRE DEPT/RESCUE SQUAD

Trees were downed.

Hail in ALCONA, MICHIGAN
From 13-JUL-04 16:50:00 to 13-JUL-04 16:50:00 (EST)
Location: GLENNIE
Magnitude: 0.75 
Reported by: FIRE DEPT/RESCUE SQUAD

Thunderstorm Wind in ROSCOMMON, MICHIGAN
From 13-JUL-04 15:30:00 to 13-JUL-04 15:30:00 (EST)
Location: ROSCOMMON
Magnitude: 52 EG
Reported by: GENERAL PUBLIC

Trees were downed.

Hail in OTSEGO, MICHIGAN
From 13-JUL-04 17:39:00 to 13-JUL-04 17:39:00 (EST)
Location: GAYLORD
Magnitude: 0.75 
Reported by: NWS EMPLOYEE(OFF DUTY)

Hail in CHEBOYGAN, MICHIGAN
From 13-JUL-04 17:40:00 to 13-JUL-04 17:40:00 (EST)
Location: TOPINABEE
Magnitude: 0.75 
Reported by: GENERAL PUBLIC