Storm History

Tornado outbreak of 9/20/2018

Widespread damage due to downbursts and tornadoes occurred Thursday, September 20 from south central Minnesota into west central Wisconsin. Some downbursts exceeded 100 mph. There were 27 tornadoes (one in Iowa, 25 in Minnesota, one that crossed from Minnesota into Wisconsin, and one in Wisconsin).  Two were rated EF2 with winds of 125 and 130 mph, 15 were rated EF1 with winds of 86-110 mph, and ten were rated EF0 with winds up to 85 mph. With 25 tornadoes in a matter of hours, this was Minnesota’s third most prolific tornado day (48 on June 17, 2010 and 27 on June 16, 1992, though both of those days had a number of much stronger tornadoes). Seven tornadoes touched inside Goodhue County during this storm event (labeled boldface below graphic).

Tornado tracks from 9/20/2018 outbreak.

1.) Superior, IA tornado: EF1
2.) Granada, MN tornado: EF1
3.) Garden City, MN tornado: EF0
4.) near Skyline, MN tornado: EF0
5.) Lake Elysian, MN tornado: EF1
6.) Janesville, MN (east) tornado: EF0
7.) near Waldorf, MN tornado: EF1
8.) Waterville, MN tornado: EF1
9.) Waseca-Medford, MN tornado: EF1
10.) Morristown, MN tornado: EF2
11.) Roberds Lake, MN (southeast side) tornado: EF1
12.) Owatonna, MN tornado: EF1
13.) Faribault Airport, MN tornado: EF2
14.) Roberds Lake, MN (north side) tornado: EF1
15.) Medford Northeast, MN tornado: EF1
16.) Faribault Northeast, MN tornado: EF1
17.) Rice County Southeast, MN tornado: EF1
18.) Dundas, MN (south) tornado: EF1
19.) Dundas, MN tornado: EF0
20.) Stanton, MN tornado: EF1
21.) Wanamingo, MN tornado: EF0
22.) Cannon Falls, MN (south) tornado: EF1
23.) Cannon Falls, MN (north) tornado: EF0
24.) New Trier, MN tornado: EF0
25.) Zumbrota, MN tornado: EF0
26.) Prairie Island, MN to Diamond Bluff, WI tornado: EF0
27.) Ellsworth, WI tornado: EF0

Tornado events on 8/27/2018

On August 27, 2018 a line of storms moved across eastern Minnesota into Wisconsin. These storms caused widespread wind damage and produced two EF-0 tornadoes in Rice and Goodhue Counties. These tornadoes were short-lived and formed out of a mesovortex-like feature. Downburst wind damage was also found along the path of the mesovortex. Portions of the city of Red Wing had extensive wind damage with the Red Wing Regional Airport automated station measuring a wind gust of 82 mph.

Showing tornado tracks near Nerstrand and Vasa on 8/27/2018.

Stats on graphic current as of 2/11/2020.

Most information shown on this page was sourced from the National Weather Service and can be found by searching