Tornado Risk in Perry County, TN
Perry County, TN: what NOAA's tornado record says
12 tornado tracks have crossed Perry County since 1999 by NOAA's count, roughly one every 6.3 years - the Low band on this site's scale. That is the 33rd percentile nationally for tornado frequency. Within Tennessee alone, Perry County ranks 62 of 95 counties for tornado frequency.
The number that matters more than frequency
Yes. Perry 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
Tennessee does not currently have a confirmed state rebate layered on top of FEMA's 75% Hazard Mitigation cost-share, so a Perry County homeowner should expect the full national range: $2,890-$13,280, $7,645 typical.
Power after the storm, not just shelter during it
8,987 people live in Perry County, and a tornado outbreak's power loss usually reaches far more of Tennessee than the tracks themselves touch. A portable battery unit is the faster, no-fuel way to bridge that outage.
What Perry County's figure does not tell you
Perry County's figure is county-wide, not address-specific. Perry County covers about 415 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. Perry County has about 8,987 residents.