One lone thunderstorm developed in west central Minnesota and quickly became severe and produced hail, wind, and even the strongest tornado of the year in our area.

Hail in LINCOLN, MINNESOTA
From 18-AUG-17 16:54:00 to 18-AUG-17 16:54:00 (CST-6)
Location: LAKE BENTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LYON, MINNESOTA
From 18-AUG-17 17:00:00 to 18-AUG-17 17:00:00 (CST-6)
Location: LYND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Also road flooding being reported in Lynd, MN via Social Media.

Hail in COTTONWOOD, MINNESOTA
From 18-AUG-17 17:40:00 to 18-AUG-17 17:40:00 (CST-6)
Location: JEFFERS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MURRAY, MINNESOTA
From 18-AUG-17 17:45:00 to 18-AUG-17 17:45:00 (CST-6)
Location: LAKE WILSON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Pea to quarter size hail was reported.

Hail in NOBLES, MINNESOTA
From 18-AUG-17 18:20:00 to 18-AUG-17 18:20:00 (CST-6)
Location: WILMONT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in NOBLES, MINNESOTA
From 18-AUG-17 18:40:00 to 18-AUG-17 18:40:00 (CST-6)
Location: ORG
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in NOBLES, MINNESOTA
From 18-AUG-17 18:55:00 to 18-AUG-17 18:55:00 (CST-6)
Location: BIGELOW
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Tornado in NOBLES, MINNESOTA
From 18-AUG-17 18:37:00 to 18-AUG-17 18:43:00 (CST-6)
Location: RUSHMORE
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 75.00K
Reported by: NWS Storm Survey

EF-1 tornado was responsible for mainly crop damage after crossing Interstate 90.

Thunderstorm Wind in LYON, MINNESOTA
From 18-AUG-17 16:35:00 to 18-AUG-17 16:35:00 (CST-6)
Location: MINNEOTA
Magnitude: 58.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Peal size hail and very heavy rain occurred at the same time.

Thunderstorm Wind in LYON, MINNESOTA
From 18-AUG-17 17:25:00 to 18-AUG-17 17:25:00 (CST-6)
Location: GARVIN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A few tree branches downed.

Thunderstorm Wind in MURRAY, MINNESOTA
From 18-AUG-17 17:45:00 to 18-AUG-17 17:45:00 (CST-6)
Location: LAKE WILSON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A few tree branches downed.

Tornado in NOBLES, MINNESOTA
From 18-AUG-17 18:47:00 to 18-AUG-17 18:54:00 (CST-6)
Location: BIGELOW
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 100.00K
Reported by: NWS Storm Survey

EF-1 tornado resulted in mainly crop damage along it's path.  The tornado crossed into Osceola County of northwest Iowa before dissipating.

Tornado in NOBLES, MINNESOTA
From 18-AUG-17 18:26:00 to 18-AUG-17 18:35:00 (CST-6)
Location: RUSHMORE
Tornado F-scale: EF1
Property damage: 500.00K
Crop damage: 75.00K
Reported by: NWS Storm Survey

EF-1 tornado hit a hog confinement building before the storm crossed Interstate 90.  20 to 30 hogs were killed.