Thunderstorms producing torrential rainfall led to flooding in the Detroit metro area early Thursday morning (August 24th). Western Wayne county into Monroe county was hardest hit resulting in widespread residential flooding, road closures, and stranded vehicles. Most notable was the closure of Dingell Drive at Detroit Metro Airport which cut off access to the McNamara terminal for several hours. A lengthy closure of I-94 at I-275 was also reported. Numerous rainfall totals in the 3 to 5 inch range were reported mostly in the 6 hour period from midnight to 6 AM. The highest total was 7.36 inches from a CoCoRaHS station in Belleville, a 24 hour total nearly all of which fell during this event.
A second round of rapidly developing thunderstorms began to pop up over Central and Southwest Lower Michigan by the early evening hours of August 24th, with the exceptional moisture and instability in place over southern Lower Michigan. The storms quickly grew upscale and became severe, leading to a west-east line of severe thunderstorms which dropped south through southeast Michigan during the evening hours.
Strong winds in the mid levels allowed for damaging winds to be the primary hazard, with areas of southeast Michigan seeing 60-80 MPH wind gusts which lead to extensive tree damage and power outages, along with some structural damage to homes. At the peak, close to 500,000 customers lost power in southern lower Michigan.  A surface low tracking through southern Lower Michigan was able to help spawn tornadoes, with an EF-2 developing over northeast Ingham. This tornado weakened and tracked into Livingston county near Fowlerville before dissipating. This 12 mile track tornado was by far the strongest and longest duration one of the day, and also resulted in 1 fatality as cars were flipped on I-69 in Ingham county. Short lived-weak QLCS tornadoes spun up over Wayne and northeast Monroe counties as the intense thunderstorm complex exited the state around Midnight. Winds with these tornadoes reached 80-105 mph, but even a few wet micro-burst/straight line winds produced wind gusts to 90 mph embedded in the line of storms.
Rainfall rates were intense (1-2��� per hr), but due to the rapid movement of the complex/storms (45-60 MPH), rainfall amounts stayed under 3 inches just about everywhere. Highest rainfall amounts of 1.5-3 inches occurred along the M-59 corridor up to I-69 corridor. Due to heavy rainfall from the previous day (1-3 inches with isolated 5-7 inch totals in Wayne/Monroe counties), even locations which received amounts under 1.5 inches experienced some flooding, mostly low lying/flood prone locations.  The Lower River Rouge in Wayne county experienced major flooding and Clinton River in Macomb experienced moderate flooding.
Finally, prolific lightning was observed with the thunderstorm complex as it moved through southeast Michigan, producing thousands of cloud to ground strikes, with a good percentage of them being the stronger positive charged ones.

Flood in WASHTENAW, MICHIGAN
From 24-AUG-23 06:00:00 to 24-AUG-23 08:00:00 (EST-5)
Location: SALEM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Heavy rain with reported rainfall amounts around 5 inches across far eastern Washtenaw county lead to flooding. Tyler road near Willow Run Airport was washed out.

Tornado in MONROE, MICHIGAN
From 24-AUG-23 21:38:00 to 24-AUG-23 21:43:00 (EST-5)
Location: GRAFTON
Tornado F-scale: EF1
Property damage: 1.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The weak tornado touched down in a farm field in Ash Township north of Newport Road and half a mile west of North Telegraph Road. The tornado tracked southeast and hit Frenchtown Villa Mobile Home Park where the bulk of the damage occurred on the north side of the park. Roofs were torn off and a manufactured home was flipped over. Other damage included shingle and roof damage on the northeast side of the park. Maximum winds were estimated to be 100 mph. The tornado continued to track southeast and crossed over I-75 by the Meijer Distribution Center where large tree limbs were downed to the east of the center. As the tornado continued southeast, several large tree limbs were downed with leaning power poles noted. The tornado dissipated in a farm field about half a mile east of North Dixie Highway and south of Post Road in Frenchtown Township in Monroe County.

Thunderstorm Wind in WAYNE, MICHIGAN
From 24-AUG-23 21:33:00 to 24-AUG-23 21:33:00 (EST-5)
Location: (DTW)DETROIT METRO A
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Measured wind gust at Detroit Metro Airport.

Thunderstorm Wind in LIVINGSTON, MICHIGAN
From 24-AUG-23 01:12:00 to 24-AUG-23 01:12:00 (EST-5)
Location: OAK GROVE
Magnitude: 56.00 EG
Property damage: 800.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees reported down throughout the county. Over 400 homes and mobile homes were affected, with 4 homes suffering major damage.

Thunderstorm Wind in WAYNE, MICHIGAN
From 23-AUG-23 22:50:00 to 23-AUG-23 22:50:00 (EST-5)
Location: WYANDOTTE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large trees observed down.

Thunderstorm Wind in MONROE, MICHIGAN
From 24-AUG-23 01:48:00 to 24-AUG-23 01:48:00 (EST-5)
Location: LA SALLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

MDOT reported a tree down.

Thunderstorm Wind in MONROE, MICHIGAN
From 24-AUG-23 02:53:00 to 24-AUG-23 02:53:00 (EST-5)
Location: ERIE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

MDOT reported a tree down.

Thunderstorm Wind in WAYNE, MICHIGAN
From 24-AUG-23 21:30:00 to 24-AUG-23 21:30:00 (EST-5)
Location: DETROIT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported wind gust.

Thunderstorm Wind in WASHTENAW, MICHIGAN
From 24-AUG-23 21:20:00 to 24-AUG-23 21:20:00 (EST-5)
Location: EASTLAWN
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind speed measured by a spotter anemometer.

Thunderstorm Wind in WAYNE, MICHIGAN
From 24-AUG-23 21:20:00 to 24-AUG-23 21:20:00 (EST-5)
Location: REDFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large tree branches reported down.

Thunderstorm Wind in LIVINGSTON, MICHIGAN
From 24-AUG-23 20:45:00 to 24-AUG-23 20:45:00 (EST-5)
Location: HOWELL
Magnitude: 61.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines reported down throughout Livingston county.

Thunderstorm Wind in OAKLAND, MICHIGAN
From 24-AUG-23 21:07:00 to 24-AUG-23 21:07:00 (EST-5)
Location: NOVI
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Eight inch tree limbs reported down, with numerous small tree limbs downed around neightborhood.

Thunderstorm Wind in LIVINGSTON, MICHIGAN
From 24-AUG-23 20:44:00 to 24-AUG-23 20:44:00 (EST-5)
Location: FOWLERVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Six to twelve inch diameter tree limbs reported down.

Thunderstorm Wind in MACOMB, MICHIGAN
From 24-AUG-23 21:21:00 to 24-AUG-23 21:21:00 (EST-5)
Location: MT CLEMENS
Magnitude: 61.00 EG
Property damage: 3.10M
Crop damage: 0.00K
Reported by: Emergency Manager

Trees and power lines reported down across the county, especially in and around Clinton Township. Around 450 homes were affected, with 43 homes and businesses seeing major damage. Schools in Anchor Bay also reported flooding on the first floor, which caused damage to the flooring that needed to be replaced, along with the debris removal.

Thunderstorm Wind in WAYNE, MICHIGAN
From 24-AUG-23 01:20:00 to 24-AUG-23 01:20:00 (EST-5)
Location: FLAT ROCK
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple trees and power lines reported across Huron Charter Township.

Thunderstorm Wind in WAYNE, MICHIGAN
From 24-AUG-23 21:22:00 to 24-AUG-23 21:22:00 (EST-5)
Location: PLYMOUTH
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple trees uprooted with shingles blown off roofs.

Thunderstorm Wind in GENESEE, MICHIGAN
From 24-AUG-23 20:41:00 to 24-AUG-23 20:41:00 (EST-5)
Location: FENTON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Six inch tree limbs reported down.

Thunderstorm Wind in LENAWEE, MICHIGAN
From 24-AUG-23 21:24:00 to 24-AUG-23 21:24:00 (EST-5)
Location: TECUMSEH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large tree limb observed down.

Thunderstorm Wind in WASHTENAW, MICHIGAN
From 24-AUG-23 21:10:00 to 24-AUG-23 21:10:00 (EST-5)
Location: ANN ARBOR
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large trees reported blown down on cars and streets.

Tornado in WAYNE, MICHIGAN
From 24-AUG-23 21:19:00 to 24-AUG-23 21:21:00 (EST-5)
Location: CHERRY HILL
Tornado F-scale: EF0
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The weak tornado touched down just northwest of Pheasant Run Golf course and tracked southeast. Dozens of trees were downed and uprooted. The tornado continued southeast, tracking across Summit Parkway and Canton Center Road, bringing down large limbs in the process. As the tornado reached Sheldon Road, trees were sheared and hardwood tree fell onto a house. Maximum winds were estimated to be 80 mph. The tornado dissipated just north of the Lower River Rouge.

Thunderstorm Wind in WAYNE, MICHIGAN
From 24-AUG-23 21:20:00 to 24-AUG-23 21:20:00 (EST-5)
Location: PLYMOUTH ARPT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A large pine tree was uprooted and landed on roof of a home.

Thunderstorm Wind in LIVINGSTON, MICHIGAN
From 24-AUG-23 21:05:00 to 24-AUG-23 21:05:00 (EST-5)
Location: GREEN OAK
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees reported blown down across Green Oak Township.

Thunderstorm Wind in LENAWEE, MICHIGAN
From 24-AUG-23 21:20:00 to 24-AUG-23 21:20:00 (EST-5)
Location: NEWBURG
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large tree blown down onto road.

Thunderstorm Wind in LIVINGSTON, MICHIGAN
From 24-AUG-23 20:40:00 to 24-AUG-23 20:40:00 (EST-5)
Location: PARKERS CORNERS
Magnitude: 78.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Trees snapped and uprooted due to straight line winds from Wallace road to Cedar road, along and north of West Van Orgen Road.

Thunderstorm Wind in GENESEE, MICHIGAN
From 24-AUG-23 20:45:00 to 24-AUG-23 20:45:00 (EST-5)
Location: ARGENTINE
Magnitude: 59.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple trees reported down in Argentine.

Thunderstorm Wind in LIVINGSTON, MICHIGAN
From 24-AUG-23 21:00:00 to 24-AUG-23 21:00:00 (EST-5)
Location: BRIGHTON
Magnitude: 59.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Trees reported down.

Thunderstorm Wind in OAKLAND, MICHIGAN
From 24-AUG-23 21:10:00 to 24-AUG-23 21:10:00 (EST-5)
Location: TROY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

One foot diameter tree reported blown down.

Thunderstorm Wind in WASHTENAW, MICHIGAN
From 24-AUG-23 21:15:00 to 24-AUG-23 21:15:00 (EST-5)
Location: SALEM
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Trees and power lines reported down across Salem Township.

Thunderstorm Wind in WAYNE, MICHIGAN
From 24-AUG-23 21:39:00 to 24-AUG-23 21:39:00 (EST-5)
Location: WOODHAVEN
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Trees observed blown down.

Thunderstorm Wind in MONROE, MICHIGAN
From 24-AUG-23 21:42:00 to 24-AUG-23 21:42:00 (EST-5)
Location: SOUTH ROCKWOOD
Magnitude: 56.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Large trees observed blown down.

Thunderstorm Wind in LIVINGSTON, MICHIGAN
From 24-AUG-23 20:46:00 to 24-AUG-23 20:46:00 (EST-5)
Location: FOWLERVILLE ARPT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Numerous trees and tree limbs downed from wet microburst.

Tornado in WAYNE, MICHIGAN
From 24-AUG-23 21:42:00 to 24-AUG-23 21:45:00 (EST-5)
Location: ROCKWOOD
Tornado F-scale: EF0
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado weakened as it crossed the Huron River from Monroe County and into Wayne County.  The tornado continued tracking east-southeast and moved over the Lake Erie Metropark Golf Course with multiple large tree limbs downed before ending at the Detroit River. The total path length of the tornado as it moved through Monroe and Wayne counties was 5.4 miles.

Thunderstorm Wind in SHIAWASSEE, MICHIGAN
From 24-AUG-23 20:16:00 to 24-AUG-23 20:16:00 (EST-5)
Location: WEST FIVE PTS
Magnitude: 56.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

A large tree was reported to have fallen on a house with power outages also reported around Owosso.

Flash Flood in MONROE, MICHIGAN
From 24-AUG-23 03:18:00 to 24-AUG-23 06:00:00 (EST-5)
Location: OAKVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy rain over northeast Monroe county with up around 5 inches of rain reported caused flash flooding. Residential streets were submerged in water in and around Monroe.

Tornado in WAYNE, MICHIGAN
From 24-AUG-23 21:23:00 to 24-AUG-23 21:26:00 (EST-5)
Location: BELLEVILLE
Tornado F-scale: EF1
Property damage: 60.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The weak tornado touched near or just south of the Wagner Homestead Farm with mainly leaf and twigs blown down. The tornado tracked southeast and crossed Elwell road near Belmont drive. Trees were downed and uprooted. The tornado hit the Mobile Manor Trail Park. A tree was broken in half with uprooted softwoods noted. More significant tree damage was noted as the tornado approached Martinsville Road, generally tracking close to the Hubbard Drain. Maximum winds were estimated to be 90 mph. Trees down and siding peeled off some homes, along with a large tree limb down on a home. The tornado appeared to have dissipated in between Pebblebrook Drive and Fret Road.

Tornado in LIVINGSTON, MICHIGAN
From 24-AUG-23 20:40:00 to 24-AUG-23 20:42:00 (EST-5)
Location: FOWLERVILLE
Tornado F-scale: EF1
Property damage: 70.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The strong tornado over northeast Ingham county weakened and moved into Livingston county south of North Cedar Road and close to the West Branch Red Cedar River by Wallace Road. Trees and tree limbs were uprooted and blown down with estimated winds up to 90 mph as the tornado tracked east. The tornado weakened further and dissipated along Van Buren Road and west of North Nicholson Road.

Tornado in WAYNE, MICHIGAN
From 24-AUG-23 21:43:00 to 24-AUG-23 21:45:00 (EST-5)
Location: GIBRALTAR
Tornado F-scale: EF1
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The weak tornado touched down to the southwest of Gibraltar Road and West Jefferson Avenue in the Brownstown Creek area. The tornado traveled southeast across West Jefferson Avenue and south Gibralter Road where multiple trees were topped, large tree limbs snapped and uprooted trees. The tornado crossed the northern portion of Edmond Island before continuing southeast to Horse Island where it eventually dissipated. Damage across the islands included large tree limbs downed, snapped trees, and a large tree downed on a trailer. Maximum winds were estimated to be 90 mph.

Hail in LAPEER, MICHIGAN
From 23-AUG-23 08:28:00 to 23-AUG-23 08:28:00 (EST-5)
Location: LAPEER DUPONT ARPT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in OAKLAND, MICHIGAN
From 24-AUG-23 00:45:00 to 24-AUG-23 00:45:00 (EST-5)
Location: SOUTH LYON
Magnitude: 70.00 EG
Property damage: 7.00M
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Widespread trees reported blown down. The South Lyon DPW main building was severely damaged (roof torn off, all overhead doors blown in, walls bowing out). One South Lyon PD patrol vehicle was severely damaged on a flooded road responding to a stranded vehicle requiring rescue. Homes were also affected, with several having major damage or even destroyed. The City of South Lyon offices had no power for two days.

Flood in WAYNE, MICHIGAN
From 24-AUG-23 06:00:00 to 24-AUG-23 11:00:00 (EST-5)
Location: NORTHVILLE
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: Emergency Manager

Flood waters from the flash flooding slowly receded.

Flood in MONROE, MICHIGAN
From 24-AUG-23 06:00:00 to 24-AUG-23 09:00:00 (EST-5)
Location: OAKVILLE
Flood cause: Heavy Rain
Property damage: 1.00M
Crop damage: 0.00K
Reported by: Public

Flood waters from the flash flooding slowly receded.

Flash Flood in WASHTENAW, MICHIGAN
From 24-AUG-23 02:00:00 to 24-AUG-23 05:00:00 (EST-5)
Location: SALEM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Heavy rain with reported rainfall amounts around 5 inches across far eastern Washtenaw county lead to flooding. Tyler road near Willow Run Airport was washed out.

Tornado in MONROE, MICHIGAN
From 24-AUG-23 21:39:00 to 24-AUG-23 21:42:00 (EST-5)
Location: SOUTH ROCKWOOD
Tornado F-scale: EF1
Property damage: 300.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The weak tornado touched down on Carleton Rockwood Road, one mile east of Telegraph Road. The tornado tracked eastward across Armstrong Road where there were numerous large tree limbs down. There were multiple trees that were snapped and tops taken off, along with some house shingles partially torn off near Brandon Road. The tornado continued to track east across I-75 and South Huron River Drive into where numerous large tree limbs were blown down, one of which fell on a house. There was also a roof partially torn off and garage door damaged near South Huron River Drive and North Dixie Highway. Maximum winds were estimated to be 105 mph. The tornado then crossed into Wayne County and moved over the Lake Erie Metropark Golf Course with multiple large tree limbs downed before ending at the Detroit River. The total path length of the tornado as it moved through Monroe and Wayne counties was 5.4 miles.

Flash Flood in WAYNE, MICHIGAN
From 24-AUG-23 03:50:00 to 24-AUG-23 06:00:00 (EST-5)
Location: NORTHVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain of 4-7 inches caused flooding across much of Western Wayne County. Areas in and around Detroit Metro Airport were particulary hard hit, with flooding limiting the acess to McNamara Terminal. Vehicles were stranded in several feet of water and parts of I-275 and I-94 were closed due to flooding. Numerous reports of roadway flooding in Canton Township, some of which required water rescues. Many businesses throughout Canton Township were damaged by flooding. Several inches of water covering residential street in Woodhaven.  Flooding reported at Five Mile Rd and Northville Rd. Finally, after the 8/24 flooding, the Western Township Utilities Authority system could not keep up with the capacity and was forced to release partially treated effluent into the Lower Rouge River creating a public health issue.