Thunderstorms developed along a nearly stationary front over western and central Minnesota during the late afternoon and early evening of the 26th. The storms then tracked east across southeast Minnesota during the evening hours. A NWS Storm Survey estimated the wind speed from straight-line thunderstorms winds to be between 70 and 85 mph over parts of Mower County.

Thunderstorm Wind in OLMSTED, MINNESOTA
From 26-JUN-10 22:21:00 to 26-JUN-10 22:21:00 (CST-6)
Location: LAIRD
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

An automated mesonet sensor system recorded a measured wind gust of 60 mph.

Thunderstorm Wind in OLMSTED, MINNESOTA
From 26-JUN-10 22:22:00 to 26-JUN-10 22:22:00 (CST-6)
Location: EYOTA
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Spotters in Eyota measured a thunderstorm wind gust of 60 mph.

Thunderstorm Wind in OLMSTED, MINNESOTA
From 26-JUN-10 22:24:00 to 26-JUN-10 22:24:00 (CST-6)
Location: DOVER
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Spotters in Dover measured a thunderstorm wind gust of 60 mph.

Thunderstorm Wind in OLMSTED, MINNESOTA
From 26-JUN-10 22:10:00 to 26-JUN-10 22:10:00 (CST-6)
Location: ROCHESTER
Magnitude: 48.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds knocked down nine trees in the city of Rochester with some of these landing on vehicles. Power outages occurred from tree branches landing on power lines. Approximately 200 homes were affected.

Thunderstorm Wind in HOUSTON, MINNESOTA
From 26-JUN-10 22:50:00 to 26-JUN-10 22:50:00 (CST-6)
Location: MONEY CREEK
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorms winds blew down trees. An electrical transformer was on fire but the cause was unknown.

Thunderstorm Wind in MOWER, MINNESOTA
From 26-JUN-10 21:32:00 to 26-JUN-10 21:32:00 (CST-6)
Location: MAPLEVIEW
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew vehicles off the road and into a cornfield at the intersection of Highway 218 and Interstate 90.

Thunderstorm Wind in DODGE, MINNESOTA
From 26-JUN-10 21:37:00 to 26-JUN-10 21:37:00 (CST-6)
Location: WEST CONCORD
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Dodge County emergency manager reported a measured wind gust of 60 mph in West Concord.

Thunderstorm Wind in DODGE, MINNESOTA
From 26-JUN-10 21:45:00 to 26-JUN-10 21:45:00 (CST-6)
Location: DODGE CENTER ARPT
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The automated weather observing equipment at the Dodge Center airport measured a wind gust of 74 mph.

Hail in OLMSTED, MINNESOTA
From 26-JUN-10 22:10:00 to 26-JUN-10 22:10:00 (CST-6)
Location: ROCHESTER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in OLMSTED, MINNESOTA
From 26-JUN-10 22:12:00 to 26-JUN-10 22:12:00 (CST-6)
Location: SIMPSON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The thunderstorm winds were estimated to be between 40 and 50 mph.

Thunderstorm Wind in HOUSTON, MINNESOTA
From 26-JUN-10 22:45:00 to 26-JUN-10 22:47:00 (CST-6)
Location: PERKINS
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down 8 trees across County Road 26 from east of Rushford to west of the Money Creek area.

Thunderstorm Wind in MOWER, MINNESOTA
From 26-JUN-10 21:24:00 to 26-JUN-10 21:36:00 (CST-6)
Location: CORNING
Magnitude: 70.00 EG
Property damage: 88.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Amateur radio operators reported estimated wind gusts up to 80 mph. A NWS Storm Survey confirmed straight-line wind damage to a large area of trees and roof damage to a farm building.

Thunderstorm Wind in WINONA, MINNESOTA
From 26-JUN-10 22:32:00 to 26-JUN-10 22:32:00 (CST-6)
Location: ALTURA
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew down some trees, landing on power lines.  Nickel sized hail also occurred.