On Sep 30, a short wave moving from the plains into south central Canada brought a warm front into Michigan's Upper  Peninsula. Scattered thunderstorms developed along the front, with several of these storms becoming  severe. One supercell that originally developed in an area of higher shear over northern Wisconsin  produced three tornadoes and extensive downburst wind damage in southern Dickinson County when it  encountered an outflow boundary from earlier convection.  The majority of damage to the Iron Mountain, Kingsford and Quinnesec areas was caused by downburst  winds, which knocked trees into homes, downed power lines, etc. The most significant damage was produced by the tornado that moved through Kingsford and Iron  Mountain.

Hail in DICKINSON, MICHIGAN
From 30-SEP-02 19:18:00 to 30-SEP-02 19:18:00 (EST)
Location: IRON MTN
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Three quarter inch diameter hail was reported.

Thunderstorm Wind in DICKINSON, MICHIGAN
From 30-SEP-02 19:19:00 to 30-SEP-02 19:19:00 (EST)
Location: IRON MTN
Magnitude: 70 E
Reported by: TRAINED SPOTTER

Numerous trees were knocked down.

Tornado in DICKINSON, MICHIGAN
From 30-SEP-02 19:11:00 to 30-SEP-02 19:17:00 (EST)
Location: KINGSFORD
Tornado F-scale: F1
Property damage: 7M
Reported by: EMERGENCY MANAGER

This tornado developed over northeast Florence County, WI (See Storm Data for Wisconsin, Northeastern, for more information on the beginning portion of this tornado)  and crossed the Menominee River just south of the Iron Mountain-Kingsford airport. The storm moved east-northeast into Kingsford and Iron Mountain. As the storm moved into Iron Mountain, the track shifted more to the east and the damage path became more sporadic before the tornado lifted completely on the east side of Iron Mountain.  Numerous trees and power lines were knocked down, blocking highway US-2 and disrupting electric power and telephone service.  Gas lines were ruptured and several commercial buildings sustained substantial roof damage in Kingsford.

Tornado in DICKINSON, MICHIGAN
From 30-SEP-02 19:19:00 to 30-SEP-02 19:23:00 (EST)
Location: QUINNESEC
Tornado F-scale: F0
Reported by: EMERGENCY MANAGER

This tornado developed on the east side of Quinnesec along U.S. 2, and tracked to the east-southeast along  the north side of the highway to just west-northwest of Norway. Damage was limited to minor roof damage (lifted shingles) in Quinnesec, trees downed and numerous branches broken.

Hail in ONTONAGON, MICHIGAN
From 30-SEP-02 20:18:00 to 30-SEP-02 20:18:00 (EST)
Location: EWEN
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Three quarter inch diameter hail was reported.

Thunderstorm Wind in DICKINSON, MICHIGAN
From 30-SEP-02 19:13:00 to 30-SEP-02 19:13:00 (EST)
Location: KINGSFORD
Magnitude: 60 E
Reported by: LAW ENFORCEMENT

Power lines were knocked down.

Thunderstorm Wind in DICKINSON, MICHIGAN
From 30-SEP-02 19:22:00 to 30-SEP-02 19:22:00 (EST)
Location: QUINNESEC
Magnitude: 70 E
Reported by: LAW ENFORCEMENT

Numerous trees were knocked down.

Flash Flood in DICKINSON, MICHIGAN
From 30-SEP-02 18:58:00 to 30-SEP-02 23:59:00 (CST)
Location: IRON MTN
Reported by: LAW ENFORCEMENT

A foot of water was reported over highway US-2  from torrential rain.

Flash Flood in DICKINSON, MICHIGAN
From 30-SEP-02 20:54:00 to 30-SEP-02 23:59:00 (EST)
Location: QUINNESEC
Reported by: LAW ENFORCEMENT

Two feet of water was reported over Highway US-2.

Hail in IRON, MICHIGAN
From 30-SEP-02 18:16:00 to 30-SEP-02 18:16:00 (EST)
Location: CRYSTAL FALLS
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Three quarter inch diameter hail was reported.

Thunderstorm Wind in MENOMINEE, MICHIGAN
From 30-SEP-02 19:58:00 to 30-SEP-02 19:58:00 (EST)
Location: LA BRANCH
Magnitude: 70 E
Reported by: GENERAL PUBLIC

A 10 inch diameter tree was blown down.

Hail in MARQUETTE, MICHIGAN
From 30-SEP-02 20:48:00 to 30-SEP-02 20:48:00 (EST)
Location: REPUBLIC
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Three quarter inch diameter hail was reported.

Hail in BARAGA, MICHIGAN
From 30-SEP-02 20:45:00 to 30-SEP-02 20:45:00 (EST)
Location: COVINGTON
Magnitude: 1.75 
Reported by: TRAINED SPOTTER

Golf ball sized hail was reported.

Tornado in DICKINSON, MICHIGAN
From 30-SEP-02 19:25:00 to 30-SEP-02 19:27:00 (EST)
Location: NORWAY
Tornado F-scale: F0
Reported by: EMERGENCY MANAGER

This tornado touched down approximately 5 miles northeast of Norway, crossing the Norway Truck Trail Road  before dissipating 1/4 mile east of the road crossing. Damage was limited to downed trees and broken branches.