October 24, 2001 Severe Thunderstorms

National Weather service personnel performed surveys of Wednesday's storm damage across portions of Southeast Michigan
Livingston and Oakland counties
It has been determined that the damage in portions of eastern Livingston and northwest Oakland counties was produced by a single tornado. A near continuous concentrated path of damage was observed from approximately 2 miles west of Hartland, through Davisburg, to approximately 3 miles northeast of Davisburg, where the damage became more widespread and uniform, indicative of straight line wind damage. This path is roughly 15 miles in length. Along most of the path, tree damage was observed, with minimal damage to structures, or F0 type damage on the Fujita scale. The greatest extent of damage was observed in Davisburg, where specifically the Davisburg elementary school sustained structural damage to the eastern portion of the building. Based on observed damage to nearby trees and vegetation along with the structural integrity of neighboring buildings, this is indicative of a tornado producing F1 damage. Therefore, this tornado's final rating will be F1, corresponding to wind speeds as high as 112 mph in Oakland county.
Saginaw county
An eyewitness account of a tornado touchdown east of Fosters was corroborated by a very short damage path of sporadic tree damage near the intersection of Bell and Busch roads. The damage path was about 100 yards in length, was consistent with F0 type damage on the Fujita scale. This corresponds to wind speeds as high as 72 mph.
Lapeer county
Substantial damage to trees and buildings was noted in Lum near Mitchell Lake and Lum roads. A large barn and a garage were destroyed as winds lifted roofs off the structures, a pickup truck in the garage was moved downwind about 20 to 40 feet, some homes in the area suffered significant roof damage, and several large trees were blown down. It was determined from the debris field and radar imagery that most of the damage was the result of microburst winds estimated at 100 mph. The damage path was just about 1 mile in length, and spread to one quarter to one half mile in width by the end of the damage path. At the core of the path on Mitchell Lake road, damage may have been enhanced by small circulations within the edges of the microburst- commonly called "Gustnadoes".
Bay and Tuscola counties
It was determined that damage in portions of far eastern Bay and western Tuscola counties was produced by a tornado. The tornado touched down 3 1/2 miles east of Munger. A residence at this location sustained substantial property damage, which included complete destruction of a small barn and garage, a grain silo lifted off its foundation, and damage to the main house, mainly to the siding and front porch. The damage path roughly paralleled the Bay/Tuscola county line in Tuscola county ending at Saginaw Bay approximately 1 mile east of Quanicasse. Damage in Tuscola county included the destruction of a pole barn, damage to the side of a barn, a fruit and vegetable stand was toppled, an irrigation system was badly damaged, numerous large trees were uprooted, and one home sustained minor damage to its front porch. The path length of this single tornado was about 7 miles and the width was around 100 yards. This tornado will be classified as an F1 in Bay county, damage in Tuscola county was indicative of an F0 tornado.