A violent outbreak of significant straight line winds, downburst winds, and multiple tornadoes occurred during the afternoon and early evening across southern Minnesota.
During the afternoon of Thursday, September 20th, a warm front lifted northward across far southern Minnesota. By the late afternoon, the warm front lied from just south of the Minnesota River, northeast to around the city of Wabasha.
Several thunderstorms developed in southwest Minnesota, and northwest Iowa. These storms moved into far southern Minnesota and quickly intensified and raced off to the east-northeast along, and north of this warm front.
Damage reports started to come into the office around 4 PM CST in Martin County, with multiple reports of significant damage from south of Mankato, to Waseca, then northeast through Waterville, Morristown, Owatonna, Faribault, Northfield, Cannon Falls, and Red Wing before moving into west central Wisconsin.
A long, and several day storm survey indicated at least XX confirmed tornadoes occurred in a widespread area of damaging winds from Martin County, northeast into west central Wisconsin.
The most destruction part of the storm occurred around Waterville, Morristown, Owatonna, Faribault and Cannon Falls. These cities all reported homes, buildings and warehouses either damaged or destroyed.
Hundreds of large, mature trees were uprooted or snapped along this path of destruction, including numerous trees up to 4 feet in diameter. In addition to the trees, structural damage was widespread including the Faribault airport where 80 planes were either damaged or destroyed as hangers were blown off their foundation.
The towns of Waterville and Faribault had the most homes damaged which was associated with EF2 tornado damage.
Two miles west of the Faribault airport, a resort area on Roberds Lake had upwords of 75 percent of the trees uprooted or blown down on the east side of the lake. Some of the trees landed on homes and split them in half.

Tornado in GOODHUE, MINNESOTA
From 20-SEP-18 18:01:00 to 20-SEP-18 18:03:00 (CST-6)
Location: CANNON FALLS
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus drone footage, concluded that an EF1 tornado tracked 1.9 miles which started 3 miles south of Cannon Falls, crossed over Highway 52, and lifted just south of downtown Cannon Falls. This tornado damaged a warehouse building, numerous large trees, homes, and a cemetery. The damage was consistent with EF1 damage with maximum wind speeds of 95 mph and a width of 440 yards. There was other damage to the north of the tornado track which was consistent with downburst winds.

Tornado in GOODHUE, MINNESOTA
From 20-SEP-18 17:56:00 to 20-SEP-18 17:57:00 (CST-6)
Location: DENNISON
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the continued tornado track from the Rice County tornado that moved an additional 0.6 miles northeast into Goodhue County. A storm survey, and drone footage, concluded that damage was associated with uprooted trees along the Rice, Goodhue county line, with a flattened corn field to the northeast of the uprooted trees. The damage was consistent with EF1 damage with maximum wind speeds of 90 mph and a width of 100 yards.

Tornado in GOODHUE, MINNESOTA
From 20-SEP-18 18:16:00 to 20-SEP-18 18:18:00 (CST-6)
Location: WELCH
Tornado F-scale: EF0
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that an EF0 tornado tracked eastward for 2.6 miles across the Mississippi River Valley, to the Wisconsin state line. The tornado tracked only one quarter of a mile north of the Treasure Island Resort and Casino. Damage was confined to uprooted trees and an outbuilding. The tornado continued into Pierce County Wisconsin.

Tornado in WASECA, MINNESOTA
From 20-SEP-18 17:20:00 to 20-SEP-18 17:21:00 (CST-6)
Location: WASECA MUNI ARPT
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

High resolution satellite data and ground surveys confirmed a narrow track through corn east of Janesville. Maximum width was 20 yards with estimated wind damage of 70 mph.

Tornado in WASECA, MINNESOTA
From 20-SEP-18 17:28:00 to 20-SEP-18 17:31:00 (CST-6)
Location: WASECA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF0 tornado started east of Waseca, and tracked northeast for 3.9 miles until moving into Steele County. This tornado tracked mainly through corn and soy bean fields, and occasionally damaging a few power lines and power poles. The damage was consistent with EF0 damage with maximum wind speeds of 85 mph and a width of 250 yards.

Tornado in WASECA, MINNESOTA
From 20-SEP-18 17:25:00 to 20-SEP-18 17:26:00 (CST-6)
Location: JANESVILLE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF0 tornado tracked 1.4 miles from southwest of Reeds Lake, then northeast to the Waseca, Le Sueur county line. Tornado damage was consistent with EF0 damage with winds up to 75 mph, and a maximum path width of 125 yards.

Tornado in LE SUEUR, MINNESOTA
From 20-SEP-18 17:26:00 to 20-SEP-18 17:32:00 (CST-6)
Location: WATERVILLE
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is a continuation path of the tornado that crossed the Waseca, Le Sueur county line southwest of Waterville.
A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF1 tornado tracked an additional 5.8 miles from southwest of Waterville, then through the northwest corner of Waterville, or between Lake Tetonka and Upper Sakatah Lake, before lifting on the south side of Horseshoe Lake. Tornado damage was consistent with EF1 damage with winds up to 90 mph, and a maximum path width of 330 yards. Damage along the path occurred to homes, outbuildings, and large trees.

Tornado in RICE, MINNESOTA
From 20-SEP-18 17:45:00 to 20-SEP-18 17:50:00 (CST-6)
Location: FARIBAULT ARPT
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF1 tornado tracked for 5.8 miles,  from near the intersection of 150th Street West, and Bagley Ave, or 2.6 miles north of the Faribault airport, northeast to just south of Dundas.
This tornado tracked mainly through corn and soy bean fields, and occasionally damaging a power pole. One electrical transmission line was blown down near the end of the tornado track which is consistent of 90 mph wind gusts. The largest path width was 440 yards.

Tornado in RICE, MINNESOTA
From 20-SEP-18 17:44:00 to 20-SEP-18 17:50:00 (CST-6)
Location: MOLAND
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF1 tornado tracked 5.8 miles from southeast of Ruskin, then northeast to the Goodhue, Rice county line. This tornado tracked mainly through corn and soy bean fields, and occasionally damaging a few sheds and outbuildings. The damage was consistent with EF1 damage with maximum wind speeds of 100 mph and a width of 300 yards.

Tornado in STEELE, MINNESOTA
From 20-SEP-18 17:35:00 to 20-SEP-18 17:42:00 (CST-6)
Location: MERIDEN
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF1 tornado started west of Owatonna, and tracked 6.5 miles across the southern and eastern portions of the town, before lifting east of the Brooktree Golf Course. The damage was consistent with EF1 damage with maximum wind speeds of 90 mph and a width of 300 yards. An outbuilding and silo were damaged near the start of the tornado track, with numerous large trees uprooted or blown down in the city of Owatonna. In addition to the tornado damage, severe straight-line winds from inflow of the tornado caused numerous large blown down trees and power poles on the south side of the track.

Tornado in STEELE, MINNESOTA
From 20-SEP-18 17:31:00 to 20-SEP-18 17:37:00 (CST-6)
Location: MERIDEN
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the continued tornado track from the Waseca County tornado that moved an additional 7.2 miles through northwest Steele County. A storm survey, and high resolution satellite imagery indicated the tornado tracked mainly through corn and soy bean fields, and occasionally damaged a few sheds and outbuildings southwest of Medford. The worst damage was to a silo and grain bin which were destroyed by the tornado. This damage was consistent with EF1 damage with maximum wind speeds of 100 mph and a width of 350 yards.

Tornado in RICE, MINNESOTA
From 20-SEP-18 17:35:00 to 20-SEP-18 17:44:00 (CST-6)
Location: MORRISTOWN
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF1 tornado started north of Morristown.  It moved northeast to the intersection of Cedar Lake Blvd, and Fairbanks Avenue, and continued moving northeast across the southeast part of Roberds Lake. It lifted just north of the Faribault airport after being on the ground for nearly 8.6 miles.
The damage was consistent with EF1 damage with maximum wind speeds of 95 mph and a width of 440 yards. Damage was significant along this path with the worst damage along the south and east sides of Roberds Lake. Areal footage and pictures concluded that hundred of trees, up to 3 feet in diameter, were uprooted or blown down onto houses on the east side of the lake from this tornado. Many of these large trees landed on homes and nearly split them in half.

Tornado in RICE, MINNESOTA
From 20-SEP-18 17:37:00 to 20-SEP-18 17:40:00 (CST-6)
Location: FARIBAULT ARPT
Tornado F-scale: EF2
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus aerial pictures and satellite imagery, concluded that an EF2 tornado started southwest of the Faribault airport, near the intersection of 195th Street West and Cedar Lake Blvd, and tracked 3.0 miles northeast. It destroyed parts of the Faribault airport before lifting just north of the airport grounds. Numerous hangers were either damaged or destroyed.
The 125 mph winds were estimated based on a well built hanger destroyed and blown off its foundation. Footings were also ripped from its frame. Local officials estimated that 80 airplanes were damaged or destroyed at the airport. Some of the debris was blown across the highway on the north side of the airport.
There was also damage on the southeast side of the tornado track which was consistent with downburst and inflow winds. These winds were estimated up to 85 mph.

Thunderstorm Wind in DAKOTA, MINNESOTA
From 20-SEP-18 18:09:00 to 20-SEP-18 18:09:00 (CST-6)
Location: MIESVILLE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that downburst winds caused damage to several large trees in the Miesville Ravine Park Reserve.

Tornado in DAKOTA, MINNESOTA
From 20-SEP-18 18:04:00 to 20-SEP-18 18:08:00 (CST-6)
Location: NEW TRIER
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF0 tornado tracked 4.6 miles from south of Hampton, then east-northeast before it lifted 2 miles east of New Trier. This tornado tracked mainly through corn and soy bean fields, and occasionally damaging a few sheds and outbuildings. The damage was consistent with EF0 damage with maximum wind speeds of 75 mph and a width of 220 yards.

Thunderstorm Wind in GOODHUE, MINNESOTA
From 20-SEP-18 18:13:00 to 20-SEP-18 18:13:00 (CST-6)
Location: WELCH
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that downburst winds caused damage to several large trees north of Welch.

Thunderstorm Wind in GOODHUE, MINNESOTA
From 20-SEP-18 18:30:00 to 20-SEP-18 18:32:00 (CST-6)
Location: FRONTENAC
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that downburst winds caused damage to a couple dozen large trees, over several blocks in Lake City.

Thunderstorm Wind in BLUE EARTH, MINNESOTA
From 20-SEP-18 17:18:00 to 20-SEP-18 17:18:00 (CST-6)
Location: MADISON LAKE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that downburst winds caused damage to large trees and power lines north of Madison Lake.

Tornado in RICE, MINNESOTA
From 20-SEP-18 17:31:00 to 20-SEP-18 17:36:00 (CST-6)
Location: MORRISTOWN
Tornado F-scale: EF2
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone, fixed wing aircraft, and satellite data, concluded that an EF2 tornado tracked nearly 5 miles from southwest of Morristown, north-northeast to just west and north of Cannon Lake before lifting.
Tornado damage was consistent with EF2 damage with winds up to 130 mph, and a maximum path width of 300 yards. The worst damage occurred on the southeast side of Morristown.
On the southeast side of Morristown, several family homes had large sections of roof structure removed, and a few had all their exterior walls collapsed. Only small interior rooms were intact.  The remainder of the tornadic track was consistent with uprooted trees, power lines, corn and soy bean field damage, and outbuildings.

Tornado in BLUE EARTH, MINNESOTA
From 20-SEP-18 16:58:00 to 20-SEP-18 17:00:00 (CST-6)
Location: GARDEN CITY
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that an EF0 tornado, with maximum winds of 70 mph, and a width of 70 yards, touched down in a field near Garden City. This tornado tracked 1.2 miles northeast through a farmstead and fairground, before dissipating in a corn field northeast of town. Most of the damage was associated with trees blown down, and a flattened corn fields.

Tornado in BLUE EARTH, MINNESOTA
From 20-SEP-18 17:04:00 to 20-SEP-18 17:05:00 (CST-6)
Location: RAPIDAN
Tornado F-scale: EF0
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus video from a drone, concluded that an EF0 tornado touched down north of Rapidan, and moved east for approximately a mile. Damage was confined to a field, and two homes. The main damage was to a home that had a tree fall on its roof.

Thunderstorm Wind in WASECA, MINNESOTA
From 20-SEP-18 17:20:00 to 20-SEP-18 17:22:00 (CST-6)
Location: WALDORF
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that damaging straight-line winds caused a few large uprooted trees, and damage to an outbuilding, and silo, from approximately 2 miles north of Waldorf to 7 miles northeast of Waldorf.

Thunderstorm Wind in WASECA, MINNESOTA
From 20-SEP-18 17:30:00 to 20-SEP-18 17:32:00 (CST-6)
Location: WASECA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that severe straight-line winds up to 70 mph, damaged corn and soy bean fields in far northeast Waseca county.

Thunderstorm Wind in RICE, MINNESOTA
From 20-SEP-18 17:53:00 to 20-SEP-18 17:54:00 (CST-6)
Location: DENNISON
Magnitude: 91.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey and drone footage concluded that damaging downburst winds, up to 105 mph, occurred west of Dennison. Damage was consistent with 105 mph as a farm building was completely destroyed and blown off its foundation. Nearly across the highway, another farm silo was blown in from a severe downburst wind. Numerous trees were also downed.

Thunderstorm Wind in RICE, MINNESOTA
From 20-SEP-18 17:47:00 to 20-SEP-18 17:50:00 (CST-6)
Location: CANNON CITY
Magnitude: 87.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey and drone footage concluded that a broad area of downburst and inflow winds occurred south of Northfield, near the intersection of Cannon City Blvd, and 147th Street East, then northeast to the intersection of Hall Ave, and 135th Street East. There was no definite path of damage but more widespread uprooted trees, power lines, and a few outbuildings and silos.

Tornado in WASECA, MINNESOTA
From 20-SEP-18 17:20:00 to 20-SEP-18 17:30:00 (CST-6)
Location: ALMA CITY
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF1 tornado tracked 10.9 miles from 4 miles north of Waldorf, then dissipated southeast of Waseca.  Tornado damage was consistent with EF1 damage with winds up to 100 mph, and a maximum path width of 300 yards. Damage was confined to trees, but a silo was also damaged.

Thunderstorm Wind in RICE, MINNESOTA
From 20-SEP-18 17:35:00 to 20-SEP-18 17:37:00 (CST-6)
Location: WARSAW
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that damaging downburst winds, up to 80 mph, occurred from west and north of Wells Lake. Damage was consistent with all the damage directed from southwest to northeast, and related to uprooted trees and power lines.

Thunderstorm Wind in LE SUEUR, MINNESOTA
From 20-SEP-18 17:28:00 to 20-SEP-18 17:29:00 (CST-6)
Location: WATERVILLE
Magnitude: 83.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus drone footage, concluded that there was significant damage to the south of the tornado track in the town of Waterville. Damage was consistent with downburst winds and inflow winds into the tornadic storm. Damage was also consistent with winds up to 95 mph with complete destruction of manufactured homes and some campers being rolled several times. Other damage included roof damage and large trees uprooted.

Thunderstorm Wind in RICE, MINNESOTA
From 20-SEP-18 17:33:00 to 20-SEP-18 17:40:00 (CST-6)
Location: MORRISTOWN
Magnitude: 83.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus drone footage, concluded that damaging downburst winds, up to 95 mph, occurred from west of Horseshoe Lake on the southwest side of Rice county, then northeast to the southwest part of Roberds Lake. Damage was generally directed from west-southwest to east-northeast.
The worst damage occurred to a home and outbuilding on the south side of Cedar Lake. Drone footage showed at this location that a metal roof and shed was blown over with wall panels pulled from the buildings.

Thunderstorm Wind in RICE, MINNESOTA
From 20-SEP-18 17:33:00 to 20-SEP-18 17:36:00 (CST-6)
Location: WARSAW
Magnitude: 74.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that sporadic downburst and inflow winds occurred on the east, and south side of the tornado track from Morristown, and west of Cannon Lake. The worst damage occurred to a metal building that was attached to a home that was blown down west of Warsaw.

Thunderstorm Wind in RICE, MINNESOTA
From 20-SEP-18 17:40:00 to 20-SEP-18 17:45:00 (CST-6)
Location: FARIBAULT ARPT
Magnitude: 74.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey and drone footage concluded that sporadic downburst and inflow  winds occurred east of the Faribault airport, on the east side of I-35, with occasional trees uprooted, or roof damage to a building for approximately 4 miles north of the airport. The damage was consistent with winds up to 80 mph, as one of buildings was well constructed with a large portion of the southwest roof removed.

Thunderstorm Wind in RICE, MINNESOTA
From 20-SEP-18 17:48:00 to 20-SEP-18 17:57:00 (CST-6)
Location: DUNDAS
Magnitude: 96.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that there was sporadic downburst and inflow wind damage from south of Northfield, east and northeast to the Rice, Goodhue county line, west of Stanton.
There was no definite path of damage but more widespread uprooted trees, power lines, and destroyed outbuildings and silos. The worst damage occurred to a farm near the intersection of 90th Street East, and Kellogg Ave.  Two large silos and outbuildings were either blown over, or destroyed. The damage is consistent with wind gusts of 110 mph. Other damage was associated with flattened corn and soy bean fields.

Thunderstorm Wind in GOODHUE, MINNESOTA
From 20-SEP-18 17:56:00 to 20-SEP-18 17:57:00 (CST-6)
Location: DENNISON
Magnitude: 96.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that damaging downburst winds, up to 110 mph, occurred north of Dennison. Damage was consistent with 110 mph as a cement silo was blown off its foundation. Other damage was associated with large trees and power poles blown down.

Thunderstorm Wind in GOODHUE, MINNESOTA
From 20-SEP-18 17:58:00 to 20-SEP-18 18:02:00 (CST-6)
Location: STANTON CARLETON ARP
Magnitude: 74.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus drone footage, concluded that there was widespread downburst and inflow wind damage from west of the Stanton airport, along the Rice, Goodhue county line, northeast to the west of Cannon Falls. There was no definite path of damage but a broad area of uprooted trees, power lines, and farm irrigation equipment. The damage is consistent with wind gusts of 85 mph.

Thunderstorm Wind in GOODHUE, MINNESOTA
From 20-SEP-18 18:01:00 to 20-SEP-18 18:03:00 (CST-6)
Location: SOGN
Magnitude: 74.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus drone footage of drone and satellite data, concluded that there was sporadic downburst wind damage approximately 3.5 miles south of Cannon Falls. There was no definite path of damage but more random uprooted trees.  The damage is consistent with wind gusts of 85 mph.

Thunderstorm Wind in GOODHUE, MINNESOTA
From 20-SEP-18 18:02:00 to 20-SEP-18 18:05:00 (CST-6)
Location: CANNON FALLS
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that sporadic downburst and inflow wind damage occurred to trees and power lines from just west of downtown Cannon Falls, to approximately 4 miles east of Cannon Falls. There was no definite path of damage but more random uprooted trees and power lines. The damage is consistent with wind gusts of 70 mph.

Tornado in MARTIN, MINNESOTA
From 20-SEP-18 16:52:00 to 20-SEP-18 16:57:00 (CST-6)
Location: GRANADA
Tornado F-scale: EF1
Property damage: 1.50M
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS Storm survey confirmed an EF1 tornado developed just west of the City of Granada, and tracked eastward for 5.3 miles as it moved into Faribault County. The average width was 220 yards and damaged several homes in Granada, before moving across farmland to the east. Numerous large trees were uprooted or blown down. The damage in Granada was consistent with EF1 damage as large sections of roof structures were removed, and one house was shifted from its foundation. Highest winds were estimated at 105 mph.

Tornado in WASECA, MINNESOTA
From 20-SEP-18 17:19:00 to 20-SEP-18 17:25:00 (CST-6)
Location: SMITHS MILL
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service storm survey concluded that an EF1 tornado tracked 7.1 miles from near the Blue Earth, Waseca county line, northwest of Janesville, then over Lake Elysian, before lifting near the Le Sueur, Waseca county line. Tornado damage was consistent with EF1 damage with winds up to 105 mph, and a maximum path width of 440 yards.  Shortly after touchdown, it hit a home and removed its roof and destroyed the garage. A man in the garage was blown into the yard and suffered a minor injury, but did not require hospitalization. Other damage was confined to trees, outbuildings, and homes. There was also isolated damage on the south side of the tornado track due to severe inflow. Damage was confined to large trees and outbuildings on east side of Lake Elysian.

Thunderstorm Wind in BLUE EARTH, MINNESOTA
From 20-SEP-18 17:08:00 to 20-SEP-18 17:10:00 (CST-6)
Location: MANKATO
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A private weather wind sensor measured a 58 knot wind gust.

Thunderstorm Wind in BLUE EARTH, MINNESOTA
From 20-SEP-18 17:17:00 to 20-SEP-18 17:17:00 (CST-6)
Location: (MKT)MANKATO MUNI AR
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in WASECA, MINNESOTA
From 20-SEP-18 17:35:00 to 20-SEP-18 17:35:00 (CST-6)
Location: WASECA MUNI ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in GOODHUE, MINNESOTA
From 20-SEP-18 18:20:00 to 20-SEP-18 18:20:00 (CST-6)
Location: WELCH
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A private weather wind sensor measured a 55 knot wind gust.

Thunderstorm Wind in MARTIN, MINNESOTA
From 20-SEP-18 16:38:00 to 20-SEP-18 16:51:00 (CST-6)
Location: CEYLON
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that severe straight line winds blew down or uprooted numerous trees and power lines from near Ceylon, northeast to Fairmont.

Tornado in RICE, MINNESOTA
From 20-SEP-18 17:40:00 to 20-SEP-18 17:47:00 (CST-6)
Location: FARIBAULT
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF1 tornado tracked 9.1 miles from northeast of Medford, near the Rice, Steele County line, then northeast to just north of Highway 60 before lifting in a corn field.
This tornado tracked mainly through corn and soy bean fields, but several homes, silos and grain bins were damaged, or destroyed along the tornado's path. The damage was consistent with EF1 damage with maximum wind speeds of 105 mph and a width of 500 yards.

Tornado in RICE, MINNESOTA
From 20-SEP-18 17:44:00 to 20-SEP-18 17:48:00 (CST-6)
Location: CANNON CITY
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus drone footage, concluded that an EF1 tornado started approximately 2.4 miles north of the city of Faribault, and tracked northeast for 4.6 miles before lifting just east of the Cannon River Wilderness Area. All of the damage was associated with uprooted or blown down large trees along the Cannon River. The maximum wind speeds were 95 mph and a path width of 440 yards.

Tornado in RICE, MINNESOTA
From 20-SEP-18 17:46:00 to 20-SEP-18 17:51:00 (CST-6)
Location: DUNDAS
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF0 tornado tracked 5.5 miles from the intersection of I-35 and 130th Street West, northeast to the city of Dundas. This tornado started with damage to a billboard on I-35 with uprooted pine trees, then mainly damage to corn and soy bean fields, and it ended with several large trees uprooted in Dundas. The damage was consistent with EF0 damage with maximum wind speeds of 75 mph and a width of 75 yards.

Tornado in GOODHUE, MINNESOTA
From 20-SEP-18 17:50:00 to 20-SEP-18 17:51:00 (CST-6)
Location: KENYON
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the continued tornado track from the Rice County tornado that moved an additional 1.4 miles northeast into Goodhue County. A storm survey, and high resolution satellite imagery, concluded that damage was associated with flattened corn and soy bean fields, and a loss of a silo's roof panel. The damage is consistent with EF1 damage with winds up to 90 mph, and a width of 100 yards.

Tornado in RICE, MINNESOTA
From 20-SEP-18 17:52:00 to 20-SEP-18 17:56:00 (CST-6)
Location: NORTHFIELD
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF1 tornado tracked 4.7 miles from southeast of Owatonna, east-northeast across mainly corn and soy bean fields before moving into Goodhue County, north of Dennison. However, near the intersection of 110th Street East, and Jacobs Ave, a barn that was a restaurant and event venue was destroyed. It was called the Red Barn and was completely blown off its foundation. The damage was consistent with EF1 damage with maximum wind speeds of 105 mph and a width of 550 yards.

Tornado in GOODHUE, MINNESOTA
From 20-SEP-18 17:56:00 to 20-SEP-18 18:05:00 (CST-6)
Location: BOMBAY
Tornado F-scale: EF0
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF0 tornado tracked east of Kenyon, then northeast for 8.2 miles before lifting west of Zumbrota. This tornado tracked mainly through corn and soy bean fields, and occasionally damaged a few sheds and outbuildings. The damage was consistent with EF0 damage with maximum wind speeds of 75 mph and a width of 250 yards.

Thunderstorm Wind in FARIBAULT, MINNESOTA
From 20-SEP-18 17:01:00 to 20-SEP-18 17:01:00 (CST-6)
Location: GRANADA
Magnitude: 70.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that a severe downburst caused significant tree damage in the Riverside Town Country Club east of Granada.

Tornado in FARIBAULT, MINNESOTA
From 20-SEP-18 16:57:00 to 20-SEP-18 16:59:00 (CST-6)
Location: HUNTLEY
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the continuation of the Martin County tornado that continued into Faribault County before dissipating in a field approximately 1.2 miles east of the county line. Most of the damage was associated with downed trees and power lines. Maximum width was 70 yards with an EF0 rating based on damage.

Thunderstorm Wind in FARIBAULT, MINNESOTA
From 20-SEP-18 17:10:00 to 20-SEP-18 17:10:00 (CST-6)
Location: EASTON
Magnitude: 72.00 EG
Property damage: 250.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that a severe downburst caused significant structural damage in the town of Easton. A local church steeple was toppled, plus a few dozen trees were uprooted. Damage was consistent with winds up to 80-85 mph.

Tornado in DAKOTA, MINNESOTA
From 20-SEP-18 18:02:00 to 20-SEP-18 18:04:00 (CST-6)
Location: RANDOLPH
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus drone and satellite footage, concluded that an EF0 tornado tracked 2.5 miles from east of Randolph, to the Goodhue County line, north of Highway 29. Most of the damage was associated with corn and soy bean fields flatten. Maximum width was 70 yards with estimated wind damage of 70 mph.

Tornado in GOODHUE, MINNESOTA
From 20-SEP-18 18:04:00 to 20-SEP-18 18:05:00 (CST-6)
Location: CANNON FALLS
Tornado F-scale: EF0
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the continued tornado track from the Dakota County tornado that moved an additional 0.7 miles east into Goodhue County. A storm survey concluded that EF0 damage occurred to a warehouse building in northern Goodhue County.

Tornado in GOODHUE, MINNESOTA
From 20-SEP-18 18:13:00 to 20-SEP-18 18:14:00 (CST-6)
Location: BELLECHESTER
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the continuation of the Goodhue-Wabasha County tornado that tracked briefly into Wabasha County, before moving back into Goodhue County, and dissipated approximately 3/4 of a mile west of Bellechester. Areal footage of drone, satellite data and a storm survey, indicated EF0 damage in a corn field.

Thunderstorm Wind in GOODHUE, MINNESOTA
From 20-SEP-18 18:06:00 to 20-SEP-18 18:07:00 (CST-6)
Location: CANNON FALLS
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey concluded that downburst winds caused damage to several large trees, and flattened a corn field.

Tornado in GOODHUE, MINNESOTA
From 20-SEP-18 18:09:00 to 20-SEP-18 18:12:00 (CST-6)
Location: ZUMBROTA
Tornado F-scale: EF0
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF0 tornado started north of Zumbrota, and tracked northeast for 5.4 miles until moving into Wabasha County, southwest of Bellechester.  This tornado tracked mainly through corn and soy bean fields, and occasionally damaging a few sheds and outbuildings. The damage was consistent with EF0 damage with maximum wind speeds of 85 mph and a width of 150 yards.

Tornado in RICE, MINNESOTA
From 20-SEP-18 17:40:00 to 20-SEP-18 17:42:00 (CST-6)
Location: FARIBAULT ARPT
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey, plus areal footage of drone and satellite data, concluded that an EF1 tornado tracked 1.6 miles across the north side of Roberds Lake. Damage was consistent with maximum winds of 95 mph. Most of the damage was associated with large trees uprooted and partial roofs loss.