During the early afternoon of Thursday, August 23rd, thunderstorms begun to develop in west-central Minnesota near Morris, and moved northeast. A few large hail stones were reported south and southwest of Hancock. Later that afternoon, thunderstorms developed near Marshall, and to the northeast near Glencoe and Watertown. Some of the storms produced large hail, with an EF0 tornado confirmed northwest of Norwood Young America.

Thunderstorm Wind in CARVER, MINNESOTA
From 23-AUG-12 19:52:00 to 23-AUG-12 19:55:00 (CST-6)
Location: NORWOOD
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

There were numerous trees blown down in the town of Norwood-Young America.

Thunderstorm Wind in MCLEOD, MINNESOTA
From 23-AUG-12 19:39:00 to 23-AUG-12 19:41:00 (CST-6)
Location: GLENCOE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A house roof was partially blown off, with a part of a silo damaged, along with several large trees uprooted.

Hail in CHIPPEWA, MINNESOTA
From 23-AUG-12 10:11:00 to 23-AUG-12 10:11:00 (CST-6)
Location: MILAN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in STEVENS, MINNESOTA
From 23-AUG-12 12:10:00 to 23-AUG-12 12:20:00 (CST-6)
Location: HANCOCK
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The weather observer estimated that it hailed for ten minutes.

Hail in SWIFT, MINNESOTA
From 23-AUG-12 12:10:00 to 23-AUG-12 12:20:00 (CST-6)
Location: DANVERS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The weather observer estimated that the hail lasted for 10 minutes.

Hail in MCLEOD, MINNESOTA
From 23-AUG-12 19:22:00 to 23-AUG-12 19:22:00 (CST-6)
Location: BROWNTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in STEVENS, MINNESOTA
From 23-AUG-12 12:10:00 to 23-AUG-12 12:20:00 (CST-6)
Location: HANCOCK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Public

The observer estimated that it hailed for ten minutes, and damaged some of their corn and bean crops.

Hail in REDWOOD, MINNESOTA
From 23-AUG-12 17:37:00 to 23-AUG-12 17:37:00 (CST-6)
Location: MILROY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KANABEC, MINNESOTA
From 23-AUG-12 17:41:00 to 23-AUG-12 17:46:00 (CST-6)
Location: OGILVIE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WRIGHT, MINNESOTA
From 23-AUG-12 18:55:00 to 23-AUG-12 18:55:00 (CST-6)
Location: OSTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CARVER, MINNESOTA
From 23-AUG-12 19:36:00 to 23-AUG-12 19:36:00 (CST-6)
Location: HOLLYWOOD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MCLEOD, MINNESOTA
From 23-AUG-12 19:17:00 to 23-AUG-12 19:17:00 (CST-6)
Location: STEWART
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in MCLEOD, MINNESOTA
From 23-AUG-12 19:17:00 to 23-AUG-12 19:17:00 (CST-6)
Location: STEWART
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MEEKER, MINNESOTA
From 23-AUG-12 20:12:00 to 23-AUG-12 20:12:00 (CST-6)
Location: DASSEL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MCLEOD, MINNESOTA
From 23-AUG-12 19:44:00 to 23-AUG-12 19:44:00 (CST-6)
Location: LESTER PRAIRIE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MCLEOD, MINNESOTA
From 23-AUG-12 19:10:00 to 23-AUG-12 19:10:00 (CST-6)
Location: STEWART
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

There was numerous large tree branches that were blown down in the town of Stewart.

Thunderstorm Wind in CARVER, MINNESOTA
From 23-AUG-12 19:59:00 to 23-AUG-12 19:59:00 (CST-6)
Location: MAYER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A six-inch diameter tree limb was blown down.

Thunderstorm Wind in MCLEOD, MINNESOTA
From 23-AUG-12 19:19:00 to 23-AUG-12 19:19:00 (CST-6)
Location: HEATWOLE
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A storm chaser measured a severe wind gust at Highway 15, and 135th Street.

Thunderstorm Wind in WRIGHT, MINNESOTA
From 23-AUG-12 20:14:00 to 23-AUG-12 20:14:00 (CST-6)
Location: BUFFALO MUNI ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several large tree limbs were blown off.

Tornado in CARVER, MINNESOTA
From 23-AUG-12 19:43:00 to 23-AUG-12 19:50:00 (CST-6)
Location: NORWOOD
Tornado F-scale: EF0
Property damage: 62.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A weak tornado touched down and moved northeast for a little more than one mile to 44.81784W, 93.97340N.  It then turned slightly and moved east-northeast until dissipation.  Corn and several dozen trees were damaged as the tornado mostly moved over fields.  An old barn along County Road 33 was blown down, killing 12 cows.