Tornado History Map

Niobrara County, Wyoming tornado history

43 tornadoes recorded in or across Niobrara County from 1950 to 2025, coloured by rating on the map.

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Years1950 to 2025
Rating (F or EF scale)

Shows tornadoes that started in, or crossed, the chosen state. To see how many have passed near you, search a town or ZIP code, or tap the map.

Key
  • F0 / EF0 Light damage
  • F1 / EF1 Moderate damage
  • F2 / EF2 Considerable damage
  • F3 / EF3 Severe damage
  • F4 / EF4 Devastating damage
  • F5 / EF5 Incredible damage
  • Unknown Not rated (2007 onwards)

How to read the lines. Each line is one tornado, drawn from where it started to where it ended, coloured and sized by its rating. A dot means the record has no end point. Tap a line for its details, or tap anywhere else to see how many tornadoes have passed nearby. Weaker tornadoes appear as you zoom in. Ratings use the Fujita (F) scale before 1 February 2007 and the Enhanced Fujita (EF) scale from then on.

Tornadoes in Niobrara County

The Storm Prediction Center records 43 tornadoes whose paths touched Niobrara County, Wyoming between 1950 and 2025. None of them is recorded as having killed anyone. The busiest month is June, with 22 tornadoes. The strongest was an F2 on 28 July 1978. The most recent was on 17 June 2025.

  • 43tornadoes
  • 0deaths
  • 5injuries
  • 164per 10,000 sq mi of land

A tornado that crossed several counties counts in each one, so county counts add up to more than the state's.

How strong were the tornadoes in Niobrara County?

RatingTornadoesShare
F0 / EF02353%
F1 / EF11330%
F2 / EF237%
F3 / EF300%
F4 / EF400%
F5 / EF500%
Unknown rating49%

Niobrara County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 12 in 1980s.1950s31960s41970s61980s121990s92000s22010s42020s3

The 2020s only run to 2025, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1950s3
1960s4
1970s6
1980s12
1990s9
2000s2
2010s4
2020s3
Tornadoes by month
Bar chart of tornadoes by period. The most is 22 in Jun.Jan0Feb0Mar0Apr1May8Jun22Jul8Aug2Sep2Oct0Nov0Dec0
Show the numbers
PeriodCount
Jan0
Feb0
Mar0
Apr1
May8
Jun22
Jul8
Aug2
Sep2
Oct0
Nov0
Dec0

Records for Niobrara County

  • Strongest: Wyoming tornado28 July 1978, F2, 5 miles long
  • Longest path: Wyoming tornado11 June 1953, F1, 7.2 miles long
  • Most recent: Wyoming tornado17 June 2025, Unknown rating, 0.1 miles long

Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.

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