Tornado History Map

Lemhi County, Idaho tornado history

3 tornadoes recorded in or across Lemhi County from 1956 to 1987, 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 Lemhi County

The Storm Prediction Center records 3 tornadoes whose paths touched Lemhi County, Idaho between 1956 and 1987. None of them is recorded as having killed anyone. The busiest month is June, with 2 tornadoes. The strongest was an F1 on 1 June 1956. The most recent was on 15 June 1987.

  • 3tornadoes
  • 0deaths
  • 0injuries
  • 7per 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 Lemhi County?

RatingTornadoesShare
F0 / EF000%
F1 / EF13100%
F2 / EF200%
F3 / EF300%
F4 / EF400%
F5 / EF500%
Unknown rating00%

Lemhi County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 2 in 1980s.1950s11980s2

The 1980s only run to 1987, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1950s1
1980s2
Tornadoes by month
Bar chart of tornadoes by period. The most is 2 in Jun.Jan0Feb0Mar0Apr0May0Jun2Jul0Aug1Sep0Oct0Nov0Dec0
Show the numbers
PeriodCount
Jan0
Feb0
Mar0
Apr0
May0
Jun2
Jul0
Aug1
Sep0
Oct0
Nov0
Dec0

Records for Lemhi County

  • Strongest and Longest path: Idaho tornado1 June 1956, F1, 0.5 miles long
  • Most recent: Idaho tornado15 June 1987, F1, 0.1 miles long

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

More in Idaho

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