Tornado Risk in Duval County, FL
Duval County, FL: what NOAA's tornado record says
80 tornado tracks have crossed Duval County since 1951 by NOAA's count, roughly one every 0.9 years - the High band on this site's scale. That is the 96th percentile nationally for tornado frequency. Florida has 67 counties in this dataset; Duval County ranks 16 of them by frequency.
The number that matters more than frequency
No violent (EF4-5) tornado has been recorded in Duval County in NOAA's 76-year database. Of its 80 recorded tracks, 71 were weak (EF0-1) and 9 significant (EF2-3).
Shelter and safe-room economics
Florida does not currently have a confirmed state rebate layered on top of FEMA's 75% Hazard Mitigation cost-share, so a Duval County homeowner should expect the full national range: $2,890-$13,280, $7,645 typical.
Power after the storm, not just shelter during it
A direct hit is not required for Duval County to lose power - outbreak-wide outages across Florida regularly reach homes and businesses well outside the actual tracks. A battery bank covers that gap without a generator's fuel and venting needs.
What Duval County's figure does not tell you
Duval County's figure is county-wide, not address-specific. Duval County covers about 763 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. Duval County has about 1,055,159 residents.