Tornadoes · United States · Wyoming

Tornadoes in Natrona County, Wyoming

39 tornadoes have crossed Natrona County since 1950, 7th of the 23 counties in Wyoming with a tornado on record, an average of one every 1.9 years. They have killed 0 people and injured 8. None was rated F4 or 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
39
Deaths
0
Injuries
8
F4 and above
0
Worst on record
F2, July 21, 1987

The strongest

  1. F2, Natrona, Converse and Campbell counties, WyomingJune 11, 1962F2, 52.0 mi (84 km)
  2. F2, Natrona County, WyomingJune 18, 1987F2, 7.0 mi (11 km)
  3. F2, Natrona County, WyomingJuly 21, 1987F2, 5.0 mi (8 km)
  4. F2, Natrona County, WyomingJuly 20, 1978F2, 1.0 mi (2 km)
  5. F2, Natrona County, WyomingMay 29, 1971F2, 0.2 mi (0 km)

Every year with a tornado

The 26 years of the 76 in the record with a tornado in Natrona County. Each year links to every tornado in Wyoming that year.

YearTornadoesDeathsInjuriesStrongest
20232EF1
20191EF0
20181EF0
20171EF0
20141EF0
20132EF0
20081EF0
20031F0
20012F0
19982F0
19951F0
19911F0
19884F1
19872F2
19861F1
19842F0
19821F0
19801F0
19791F0
197811F2
19751F1
19741F1
197113F2
19691F0
19681F0
196254F2

Every tornado that crossed Natrona County

39 tornadoes, newest first.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
June 23, 20232:37 PM MDTUnratedNatrona0.750
June 23, 20232:15 PM MDTEF1Natrona10.8100$100,000
August 23, 20194:22 PM MDTEF0Natrona0.830
July 26, 20183:32 PM MDTEF0Natrona0.220
June 12, 20176:36 PM MDTEF0Natrona0.120
May 23, 20141:35 PM MDTEF0Natrona2.040
August 12, 20131:30 PM MDTEF0Natrona0.110
June 22, 20132:06 PM MDTEF0Natrona0.120
May 7, 20083:12 PM MDTEF0Natrona0.130
September 8, 20034:30 PM MDTF0Natrona0.00
June 26, 20013:25 PM MDTF0Natrona0.220
June 3, 200112:40 PM MDTF0Natrona0.125
June 9, 19982:55 PM MDTF0Natrona0.130
May 26, 199812:30 PM MDTF0Natrona2.5150
June 2, 19955:40 PM MDTF0Natrona0.110
June 7, 19913:10 PM MDTF0Natrona0.550
July 8, 19883:00 PM MDTF0Natrona0.550
July 7, 19887:25 PM MDTF0Natrona0.550
July 7, 19887:20 PM MDTF0Natrona0.550
July 7, 19886:50 PM MDTF1Natrona0.550$500 to $5,000
July 21, 19877:50 PM MDTF2Natrona5.0140
June 18, 19873:20 PM MDTF2Natrona7.050$50,000 to $500,000
June 12, 19868:00 PM MDTF1Natrona1.023
June 18, 19842:55 PM MDTF0Natrona0.510
June 13, 19844:10 PM MDTF0Natrona0.510
June 5, 19828:01 PM MDTF0Natrona6.033under $50
May 24, 19806:30 PM MDTF0Natrona0.110
July 27, 19799:10 PM MDTF0Natrona1.050
July 20, 19786:40 PM MDTF2Natrona1.01001$5,000 to $50,000
May 8, 19755:05 PM MDTF1Natrona0.110under $50
August 9, 19745:43 PM MDTF1Natrona0.110under $50
May 29, 19712:00 AM MDTF2Natrona0.2103
May 15, 19692:57 PM GMT-6F0Natrona3.867under $50
September 2, 19682:18 PM GMT-6F0Natrona0.110under $50
July 27, 19622:05 PM GMT-7F1Natrona0.510
June 15, 19623:00 PM GMT-7F1Natrona2.017$5,000 to $50,000
June 12, 19623:00 PM GMT-7F1Natrona1.017under $50
June 11, 19623:30 PM GMT-7F2Natrona52.01004$5,000 to $50,000
May 28, 196210:30 AM GMT-7F0Natrona0.110

Nearby

Warnings in force in Natrona CountyThe forecast for Natrona CountyThe live radar over Natrona CountyEvery county in Wyoming

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.