A robust upper level trough approached the western Great Lakes on September 25, while low pressure developed over northern Lower Michigan along a cold front draped over the region. Ahead of this cold front, southwest winds brought warm and moist air (dew points exceeding 70 degrees in a few areas) to Southeast Michigan during the daytime and evening hours. This moist air mass paired with ample wind shear was sufficient to generate three tornadoes, impacting northern Monroe and southern Wayne counties.

Tornado in MONROE, MICHIGAN
From 25-SEP-18 19:45:00 to 25-SEP-18 19:49:00 (EST-5)
Location: SOUTH ROCKWOOD ARPT
Tornado F-scale: EF0
Property damage: 150.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An EF0 tornado began in Berlin Township in Monroe County just south of Sigler Road on North Dixie Highway. The tornado moved northeast about 2 miles before exiting Monroe County in South Rockwood.  The tornado continue for another 2 miles before dissipating in Wayne County. The tornado remained at EF0 strength throughout the entire path. Damage in Monroe County included multiple limbs and large trees downed.

Thunderstorm Wind in MONROE, MICHIGAN
From 25-SEP-18 19:47:00 to 25-SEP-18 19:47:00 (EST-5)
Location: SOUTH ROCKWOOD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tree was blown down, along with a few large limbs.

Tornado in MONROE, MICHIGAN
From 25-SEP-18 19:23:00 to 25-SEP-18 19:32:00 (EST-5)
Location: MONROE CUSTER ARPT
Tornado F-scale: EF1
Property damage: 0.50M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The path began as weak EF0 damage, mainly to trees, until near Reinhardt and Heiss roads where it became a solid EF0. The tornado reached EF1 strength near Toben and South Stony Creek roads where roofing material was removed leaving exposed trusses and windows that were blown out of homes in the area. Garage doors were also blown in and many trees were damaged and uprooted. EF0 damage to siding and tree limbs was noted before the tornado dissipated near North Stoney Creek road and the railroad
tracks.

Tornado in WAYNE, MICHIGAN
From 25-SEP-18 19:55:00 to 25-SEP-18 20:02:00 (EST-5)
Location: GIBRALTAR
Tornado F-scale: EF1
Property damage: 0.50M
Crop damage: 0.00K
Reported by: NWS Storm Survey

An EF1 tornado began just to the west of W Jefferson Ave and south of Gibraltar Road.  The tornado remained at EF1 strength up to the Navarre Street and Young Drive area, before weakening to EF0 strength for the remainder of the path.  The tornado then crossed the Detroit River before dissipating at the north end of Elba Island in Grosse Ile Township.  Damage included multiple large limbs and trees downed, a roof partially blown off and power lines downed.

Thunderstorm Wind in MONROE, MICHIGAN
From 25-SEP-18 19:46:00 to 25-SEP-18 19:46:00 (EST-5)
Location: SOUTH ROCKWOOD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tree was blown down.

Tornado in WAYNE, MICHIGAN
From 25-SEP-18 19:49:00 to 25-SEP-18 19:52:00 (EST-5)
Location: ROCKWOOD
Tornado F-scale: EF0
Property damage: 150.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado began in Berlin Township in Monroe County about 2 miles south of South Rockwood. The tornado entered Wayne County in Rockwood and then continued for another 2 miles, before dissipating near the intersection of Meadow Lane and Ostreich Road near the border of Brownstown Charter Township and the city of Gibraltar. The tornado remained at EF0 strength throughout the entire path length. Damage included multiple limbs and large trees downed, along with missing shingles to a house near the end of the tornado path.