Tornado Risk in Valley County, ID
Valley County, ID: what NOAA's tornado record says
Zero tornado tracks recorded in Valley County since 1950, per NOAA's Storm Prediction Center. That reflects the actual geography, not a hole in the record. That is the 2nd percentile nationally for tornado frequency. Idaho has 44 counties in this dataset; Valley County ranks 42 of them by frequency.
The number that matters more than frequency
No violent (EF4-5) tornado has been recorded in Valley County in NOAA's 76-year database. Of its 0 recorded tracks, 0 were weak (EF0-1) and 0 significant (EF2-3).
Shelter and safe-room economics
Idaho does not currently have a confirmed state rebate layered on top of FEMA's 75% Hazard Mitigation cost-share, so a Valley County homeowner should expect the full national range: $2,890-$13,280, $7,645 typical.
Power after the storm, not just shelter during it
Power loss after a tornado outbreak in Idaho often reaches homes the storm itself never touched. A battery-backup unit covers the outage without the fuel and venting a generator needs.
What Valley County's figure does not tell you
Valley County's figure is county-wide, not address-specific. Valley County covers about 3,665 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. Valley County has about 12,777 residents.