Tornadoes · United States · Wisconsin

2011 tornadoes in Wisconsin

39 tornadoes touched down in Wisconsin in 2011, 86 percent above the average of the record for the state. They killed 1 people and injured 5.

2010 2012 The whole country in 2011

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

EF065 to 85 mph
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
EF2111 to 135 mph
Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.
EF3136 to 165 mph
Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
EF5over 200 mph
Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.
Unrated
The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

Every tornado in Wisconsin in 2011

April 10 15 tornadoes

Date	Time	Rating	Where	Path (mi)	Width (yd)	Injuries	Damage
April 10	4:57 PM CDT	EF1	Eau Claire	1.6	200		$200,000
April 10	5:04 PM CDT	EF1	Eau Claire	0.7	150		$250,000
April 10	6:08 PM CDT	EF3	Marathon	21.1	1,050	2	$11 million
April 10	6:12 PM CDT	EF2	Adams	17.1	800		$3.3 million
April 10	6:14 PM CDT	EF1	Juneau	4.4	150		$30,000
April 10	6:30 PM CDT	EF1	Adams	11.7	140		$601,000
April 10	6:50 PM CDT	EF1	Langlade	5.3	400		$1.0 million
April 10	7:06 PM CDT	EF1	Waushara	27.7	200
April 10	7:30 PM CDT	EF2	Forest	12.0	600		$215,000
April 10	7:53 PM CDT	EF1	Waushara	14.9	150		$1.5 million
April 10	8:03 PM CDT	EF1	Forest	3.3	250		$50,000
April 10	8:27 PM CDT	EF0	Green Lake	1.8	50		$300
April 10	8:43 PM CDT	EF2	Outagamie	1.5	175		$6.7 million
April 10	8:53 PM CDT	EF1	Brown	1.2	75		$15,000
April 10	8:59 PM CDT	EF1	Calumet	1.7	100		$100,000

May 22 10 tornadoes

Date	Time	Rating	Where	Path (mi)	Width (yd)	Injuries	Damage
May 22	2:33 PM CDT	EF1	Price to IA, MN	3.3	600		$4,000
May 22	4:00 PM CDT	EF1	Barron	2.0	300		$200,000
May 22	4:47 PM CDT	EF1	La Crosse	8.2	125		$920,000
May 22	5:15 PM CDT	EF2	Monroe	64.5	800	1	$7.7 million
May 22	5:39 PM CDT	EF0	Price	1.1	350		$1,000
May 22	5:52 PM CDT	EF0	Price	1.1	400
May 22	6:01 PM CDT	EF0	Price	2.1	350		$5,000
May 22	6:26 PM CDT	EF0	Price	0.8	275
May 22	7:33 PM CDT	EF0	Green Lake	0.4	30		$1,000
May 22	7:47 PM CDT	EF0	Green Lake	4.2	50		$5,000

June 8 1 tornado

Date	Time	Rating	Where	Path (mi)	Width (yd)	Deaths	Injuries	Damage
June 8	7:41 PM CDT	EF0	Dane	17.1	100			$100,000

June 19 1 tornado

Date	Time	Rating	Where	Path (mi)	Width (yd)	Deaths	Injuries	Damage
June 19	3:55 PM CDT	EF0	Dodge	0.1	20

June 21 4 tornadoes

Date	Time	Rating	Where	Path (mi)	Width (yd)	Damage
June 21	3:21 PM CDT	EF1	Fond du Lac	2.6	150	$30,000
June 21	3:31 PM CDT	EF1	Green Lake	2.2	150	$5,000
June 21	3:36 PM CDT	EF1	Fond du Lac	0.9	100	$15,000
June 21	3:38 PM CDT	EF1	Green Lake	1.6	100	$2,000

July 1 1 tornado

Date	Time	Rating	Where	Path (mi)	Width (yd)	Deaths	Injuries	Damage
July 1	7:51 PM CDT	EF2	Douglas	2.9	300

July 19 1 tornado

Date	Time	Rating	Where	Path (mi)	Width (yd)	Deaths	Injuries	Damage
July 19	7:30 PM CDT	EF0	Polk	0.9	25

August 8 1 tornado

Date	Time	Rating	Where	Path (mi)	Width (yd)	Deaths	Injuries	Damage
August 8	7:13 PM CDT	EF0	Dane	1.2	20

August 19 1 tornado

Date	Time	Rating	Where	Path (mi)	Width (yd)	Deaths	Injuries	Damage
August 19	4:45 PM CDT	EF1	Marinette to MI	7.9	250	1		$125,000

August 23 4 tornadoes

Date	Time	Rating	Where	Path (mi)	Width (yd)	Injuries	Damage
August 23	5:05 PM CDT	EF2	Clark	7.6	200	2	$1.4 million
August 23	5:58 PM CDT	EF0	Wood	0.0	10
August 23	6:56 PM CDT	EF0	Shawano	0.2	50
August 23	9:05 PM CDT	EF0	Calumet	0.5	100		$50,000

Crossed into Wisconsin

Tornadoes that touched down in a neighboring state and ran into Wisconsin. They are counted under the state they began in.

Date	Time	Rating	Where	Path (mi)	Width (yd)	Deaths	Injuries	Damage
May 22	4:05 PM CDT	EF2	Houston, MN to WI	13.8	150			$15 million

Nearby

Every tornado in Wisconsin since 1950 Warnings in force in Wisconsin The live radar over Wisconsin

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.