There were 4 tornadoes confirmed on September 21, 2005, all in the state of Minnesota. A series of supercells pushed through the east central part of the state producing not only the tornadoes but large hail, flashing flooding and widespread wind damage. This summary looks at the strongest tornado to occur, an F2 in Anoka County. Along with the tornado, the NWS Twin Cities stated “a rear flank downdraft was also responsible for causing damage in parts of Coon Rapids and Blaine.”
A total of 9 tornadoes are a part of the SPC Database for September 3, 1980. Four were in Stearns County, MN with the strongest an F3 that skipped from 5 miles SW of St. Cloud, passing through the city and lifting NE of town. There was tremendous damage at Bel Clare Acres. 13 mobile homes were destroyed and there was 1 fatality: A 15-month-old girl.
A significant tornado crossed through parts of Stearns and Sherburne Counties in Minnesota on July 22, 1967. This tornado is officially listed in the SPC Tornado Database with a rating of F2. Grazulis has a rating of F3.
It was called the most damaging Minnesota tornado to date, but Thomas Grazulis in Significant Tornadoes questions that statement. He believes this was a “complex combination of tornadoes and microbursts” and that much of the damage was due to the strong microbursts.
This was a bit of a challenging event to determine the exact path of this tornado and what counties and towns should be included. A 2-year-old boy lost his life west of Marshall and several farms were leveled. Per Grazulis, “damage reached near-F5 intensity near the end of the path.”
During the early morning hours of July 5, 1978, a family of tornadoes moved through parts of Norman, Mahnomen, Polk and Clearwater Counties in Minnesota. Officially, the SPC Database lists a rating of F2. Thomas Grazulis though has a rating of F3. It was a devastating event that covered 55-60 miles or more (there are discrepancies on the path length). Four fatalities were reported and 40+ injuries.