Tornado Risk in Teton County, WY
How likely is a tornado in Teton County, WY?
3 tornado tracks have crossed Teton County since 1987 by NOAA's count, roughly one every 25.6 years - the Minimal band on this site's scale. That is the 11th percentile nationally for tornado frequency. Wyoming has 23 counties in this dataset; Teton County ranks 22 of them by frequency.
The number that matters more than frequency
Yes. Teton County has recorded 1 EF4 or EF5 tornado - the strength FEMA's own safe-room guidance is built around, because a standard code-built house is not expected to survive those winds without a hardened room. A county can be lower-frequency overall and still carry this history.
Shelter and safe-room economics
Wyoming does not currently have a confirmed state rebate layered on top of FEMA's 75% Hazard Mitigation cost-share, so a Teton County homeowner should expect the full national range: $2,890-$13,280, $7,645 typical.
Power after the storm, not just shelter during it
The storm that misses Teton County outright can still take its power out - outbreak-scale outages across Wyoming are common well beyond the tracked path. A battery-backup unit handles that without a generator's setup or fuel.
What Teton County's figure does not tell you
Teton County's figure is county-wide, not address-specific. Teton County covers about 3,997 square miles, so a single touch here counts the same as a single touch in a county a fraction of that size. NOAA also documents that older records undercount weaker tornadoes from before Doppler radar became standard. Teton County has about 23,272 residents.