Tornado Risk in Missoula County, MT
Missoula County, MT: what NOAA's tornado record says
2 tornado tracks have crossed Missoula County since 1983 by NOAA's count, roughly one every 38.5 years - the Minimal band on this site's scale. That is the 9th percentile nationally for tornado frequency. Within Montana alone, Missoula County ranks 41 of 56 counties for tornado frequency.
The number that matters more than frequency
No violent (EF4-5) tornado has been recorded in Missoula County in NOAA's 76-year database. Of its 2 recorded tracks, 2 were weak (EF0-1) and 0 significant (EF2-3).
Shelter and safe-room economics
Montana does not currently have a confirmed state rebate layered on top of FEMA's 75% Hazard Mitigation cost-share, so a Missoula 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 Missoula County outright can still take its power out - outbreak-scale outages across Montana are common well beyond the tracked path. A battery-backup unit handles that without a generator's setup or fuel.
What Missoula County's figure does not tell you
Missoula County's figure is county-wide, not address-specific. Missoula County covers about 2,593 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. Missoula County has about 122,546 residents.