Northeast Detroit, MI F3 (F1?) Tornado – November 20, 1957

I chose this event because it hit within a large city, Detroit, MI. As I started delving into the data, I became even more intrigued because right of the bat there is a discrepancy in the rating. Officially, the SPC Database lists the rating of this tornado as an F3. Thomas Grazulis in Significant Tornadoes believes the damage was more in the F1 range.