Tornadoes · United States · Wisconsin

Tornadoes in Oneida County, Wisconsin

22 tornadoes have crossed Oneida County since 1950, 45th of the 72 counties in Wisconsin with a tornado on record, an average of one every 3.5 years. They have killed 5 people and injured 65. 1 was rated F4 or EF4 and above.

The rating scale

Tracks are drawn in the color of the rating. The United States rated tornadoes on Ted Fujita’s F scale until 31 January 2007 and on the Enhanced Fujita scale after it. Both run from 0 to 5, and both rate the damage rather than measure the wind: the speeds are what that damage is taken to imply.

  1. F0 / EF040 to 72 mph on the F scale, 65 to 85 mph on the EF scale

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. F1 / EF173 to 112 mph on the F scale, 86 to 110 mph on the EF scale

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. F2 / EF2113 to 157 mph on the F scale, 111 to 135 mph on the EF scale

    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.

  4. F3 / EF3158 to 206 mph on the F scale, 136 to 165 mph on the EF scale

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. F4 / EF4207 to 260 mph on the F scale, 166 to 200 mph on the EF scale

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. F5 / EF5261 to 318 mph on the F scale, over 200 mph on the EF scale

    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.

  7. 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.

Now

Tornadoes
22
Deaths
5
Injuries
65
F4 and above
1
Worst on record
F4, June 25, 1950

The deadliest in Oneida County

The strongest

Every year with a tornado

The 16 years of the 76 in the record with a tornado in Oneida County. Each year links to every tornado in Wisconsin that year.

YearTornadoesDeathsInjuriesStrongest
20191EF0
20171EF0
20042F0
20022F0
20012F1
20001F0
19931F0
19911F2
19881F0
19861F2
19851242F3
1984118F3
19813F2
198023F1
19531F1
19501212F4

Every tornado that crossed Oneida County

22 tornadoes, newest first.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
July 19, 20197:49 PM CDTEF0Oneida5.450$400,000
May 16, 20178:12 PM CDTEF0Oneida0.3175
July 11, 20044:43 PM CDTF0Oneida0.110
July 11, 20043:42 PM CDTF0Oneida0.260
April 18, 20025:33 PM CDTF0Oneida0.125
April 18, 20024:57 PM CDTF0Oneida0.125
September 6, 20017:09 PM CDTF0Oneida0.530$70,000
May 1, 20019:55 PM CDTF1Oneida1.5125$10,000
August 14, 20008:10 PM CDTF0Oneida0.120
August 9, 19939:15 PM CDTF0Oneida0.250
June 27, 19916:20 PM CDTF2Oneida6.0400$50,000 to $500,000
August 1, 19887:20 PM CDTF0Oneida0.120
July 4, 19868:35 PM CDTF2Oneida1.5100$50,000 to $500,000
June 8, 19857:15 PM CDTF3Price68.02,640242$5 million to $50 million
April 27, 19842:37 PM CSTF3Oneida29.08718$5 million to $50 million
June 13, 198110:00 PM CDTF2Oneida0.150$50,000 to $500,000
June 13, 19819:40 PM CDTF1Oneida0.110$5,000 to $50,000
June 13, 19819:40 PM CDTF1Oneida0.110$5,000 to $50,000
June 14, 19803:22 PM CDTF0Oneida0.110under $50
June 14, 19802:25 PM CDTF1Oneida1.5503$5,000 to $50,000
June 20, 19537:00 PM GMT-5F1Oneida2.0100$5,000 to $50,000
June 25, 195010:00 PM GMT-5F4Oneida13.1880212$50,000 to $500,000

Nearby

Warnings in force in Oneida CountyThe forecast for Oneida CountyThe live radar over Oneida CountyEvery county in 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.