A warm front was located over the Tri-Cities and Thumb region during the early evening hours of the 23rd.Numerous severe thunderstorms over southeast Michigan produced mostly wind damage. However, there were a few hail reports and weak tornadoes, mainly along the I-69 corridor. Total damage across southeast Michigan during May 21-23 from severe storms was estimated near 13 million dollars.

Thunderstorm Wind in ST. CLAIR, MICHIGAN
From 23-MAY-04 18:32:00 to 23-MAY-04 18:32:00 (EST)
Location: ALGONAC
Magnitude: 52 EG
Reported by: LAW ENFORCEMENT

Numerous trees were blown down.

Thunderstorm Wind in MACOMB, MICHIGAN
From 23-MAY-04 18:35:00 to 23-MAY-04 18:35:00 (EST)
Location: DISCO
Magnitude: 62 MG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in MACOMB, MICHIGAN
From 23-MAY-04 18:42:00 to 23-MAY-04 18:42:00 (EST)
Location: DISCO
Magnitude: 64 MG
Reported by: TRAINED SPOTTER

Numerous branches were reported blown down.

Thunderstorm Wind in GENESEE, MICHIGAN
From 23-MAY-04 18:46:00 to 23-MAY-04 18:46:00 (EST)
Location: GRAND BLANC
Magnitude: 70 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 80 mph thunderstorm wind gust.

Thunderstorm Wind in GENESEE, MICHIGAN
From 23-MAY-04 18:49:00 to 23-MAY-04 18:49:00 (EST)
Location: BURTON
Magnitude: 61 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 70 mph thunderstorm wind gust, which damaged a home. A tree and several tree limbs were also reported down, along with siding off of an apartment on Lapeer and Belsay roads.

Hail in SHIAWASSEE, MICHIGAN
From 23-MAY-04 16:40:00 to 23-MAY-04 16:40:00 (EST)
Location: VERNON
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Tornado in GENESEE, MICHIGAN
From 23-MAY-04 17:00:00 to 23-MAY-04 17:00:00 (EST)
Location: MONTROSE
Tornado F-scale: F0
Reported by: TRAINED SPOTTER

A tornado briefly touched down near Duffield and Mt. Morris Roads.

Thunderstorm Wind in WAYNE, MICHIGAN
From 23-MAY-04 17:50:00 to 23-MAY-04 17:50:00 (EST)
Location: DETROIT METRO ARPT
Magnitude: 68 MG
Reported by: AWOS,ASOS,MESONET,ETC

A wall was blown down in a construction area in the Detroit Metro terminal, injuring 2 people.

Thunderstorm Wind in LAPEER, MICHIGAN
From 23-MAY-04 19:05:00 to 23-MAY-04 19:05:00 (EST)
Location: ELBA
Magnitude: 70 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 80 mph thunderstorm wind gust.

Thunderstorm Wind in ST. CLAIR, MICHIGAN
From 23-MAY-04 19:30:00 to 23-MAY-04 19:30:00 (EST)
Location: YALE
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

A trained weather spotter reported trees blown on the power lines.

Thunderstorm Wind in SHIAWASSEE, MICHIGAN
From 23-MAY-04 18:20:00 to 23-MAY-04 18:20:00 (EST)
Location: VERNON
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 60 mph thunderstorm wind gust.

Thunderstorm Wind in GENESEE, MICHIGAN
From 23-MAY-04 18:46:00 to 23-MAY-04 18:46:00 (EST)
Location: BURTON
Magnitude: 70 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 80 mph thunderstorm wind gust.

Thunderstorm Wind in MACOMB, MICHIGAN
From 23-MAY-04 18:50:00 to 23-MAY-04 18:50:00 (EST)
Location: MT CLEMENS
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

Large tree limbs were blown down.

Thunderstorm Wind in OAKLAND, MICHIGAN
From 23-MAY-04 18:30:00 to 23-MAY-04 18:30:00 (EST)
Location: TROY
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 60 mph thunderstorm wind gust, which resulted in a few large tree limbs down.

Thunderstorm Wind in MACOMB, MICHIGAN
From 23-MAY-04 18:20:00 to 23-MAY-04 18:20:00 (EST)
Location: STERLING HGTS
Magnitude: 56 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 65 mph thunderstorm wind gust.

Thunderstorm Wind in WAYNE, MICHIGAN
From 23-MAY-04 17:55:00 to 23-MAY-04 17:55:00 (EST)
Location: REDFORD
Magnitude: 55 EG
Reported by: BROADCAST MEDIA

Four trees were blown down near Beach-Daly and Plymouth Roads, and toward Schoolcraft Road.

Thunderstorm Wind in OAKLAND, MICHIGAN
From 23-MAY-04 18:15:00 to 23-MAY-04 18:15:00 (EST)
Location: FERNDALE
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

Numerous trees were blown down.

Thunderstorm Wind in MACOMB, MICHIGAN
From 23-MAY-04 18:20:00 to 23-MAY-04 18:20:00 (EST)
Location: MT CLEMENS
Magnitude: 60 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 60 mph thunderstorm wind gust.

Thunderstorm Wind in WAYNE, MICHIGAN
From 23-MAY-04 17:50:00 to 23-MAY-04 17:50:00 (EST)
Location: ROMULUS
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 60 mph thunderstorm wind gust.

Thunderstorm Wind in WAYNE, MICHIGAN
From 23-MAY-04 18:02:00 to 23-MAY-04 18:02:00 (EST)
Location: DETROIT
Magnitude: 70 EG
Reported by: TRAINED SPOTTER

One large tree and numerous tree limbs were blown down.

Thunderstorm Wind in MACOMB, MICHIGAN
From 23-MAY-04 17:45:00 to 23-MAY-04 17:45:00 (EST)
Location: FRASER
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 60 mph thunderstorm wind gust.

Thunderstorm Wind in MACOMB, MICHIGAN
From 23-MAY-04 18:15:00 to 23-MAY-04 18:15:00 (EST)
Location: FRASER
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 60 mph thunderstorm wind gust, which caused a down wire.

Thunderstorm Wind in MACOMB, MICHIGAN
From 23-MAY-04 18:16:00 to 23-MAY-04 18:16:00 (EST)
Location: ST CLAIR SHRS
Magnitude: 65 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 75 mph thunderstorm wind gust, which blew down a tree.

Thunderstorm Wind in GENESEE, MICHIGAN
From 23-MAY-04 18:57:00 to 23-MAY-04 18:57:00 (EST)
Location: BURTON
Magnitude: 56 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 60 mph thunderstorm wind gust.

Thunderstorm Wind in GENESEE, MICHIGAN
From 23-MAY-04 19:05:00 to 23-MAY-04 19:05:00 (EST)
Location: OTISVILLE
Magnitude: 58 MG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in MONROE, MICHIGAN
From 23-MAY-04 17:30:00 to 23-MAY-04 17:30:00 (EST)
Location: DUNDEE
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 60 mph thunderstorm wind gust.

Hail in TUSCOLA, MICHIGAN
From 23-MAY-04 18:00:00 to 23-MAY-04 18:00:00 (EST)
Location: CARO
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in GENESEE, MICHIGAN
From 23-MAY-04 18:46:00 to 23-MAY-04 19:10:00 (EST)
Location: COUNTYWIDE
Magnitude: 70 EG
Reported by: BROADCAST MEDIA

Local media reported hundreds of trees down across the county.

Thunderstorm Wind in LAPEER, MICHIGAN
From 23-MAY-04 19:05:00 to 23-MAY-04 19:05:00 (EST)
Location: LAPEER
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

Numerous trees were reported blown down.

Thunderstorm Wind in LAPEER, MICHIGAN
From 23-MAY-04 19:14:00 to 23-MAY-04 19:14:00 (EST)
Location: KINGS MILL
Magnitude: 70 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 80 mph thunderstorm wind gust.

Thunderstorm Wind in MACOMB, MICHIGAN
From 23-MAY-04 18:12:00 to 23-MAY-04 18:12:00 (EST)
Location: FRASER
Magnitude: 78 EG
Reported by: TRAINED SPOTTER

A trained weather spotter estimated a 90 mph thunderstorm wind gust, which blew down a 2 foot diameter tree.

Tornado in GENESEE, MICHIGAN
From 23-MAY-04 17:10:00 to 23-MAY-04 17:10:00 (EST)
Location: MT MORRIS
Tornado F-scale: F0
Reported by: TRAINED SPOTTER

Multiple spotters reported a brief tornado touchdown which produced no damage.

Hail in GENESEE, MICHIGAN
From 23-MAY-04 17:20:00 to 23-MAY-04 17:20:00 (EST)
Location: FLUSHING
Magnitude: 1.75 
Reported by: GENERAL PUBLIC

Tornado in ST. CLAIR, MICHIGAN
From 23-MAY-04 19:30:00 to 23-MAY-04 19:32:00 (EST)
Location: YALE
Tornado F-scale: F1
Property damage: 5K
Reported by: TRAINED SPOTTER

A tornado touched down in the area of Bricker and Yale Road. One roof was damaged, along with numerous trees blown down.

Thunderstorm Wind in GENESEE, MICHIGAN
From 23-MAY-04 18:35:00 to 23-MAY-04 18:35:00 (EST)
Location: SWARTZ CREEK
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

A trained weather spotter reported trees blown down.