Tornado Risk in Denver County, CO
Denver County's tornado history, by the numbers
20 tornado tracks have crossed Denver County since 1966 by NOAA's count, roughly one every 3.8 years - the Moderate band on this site's scale. That is the 51st percentile nationally for tornado frequency. Within Colorado alone, Denver County ranks 24 of 64 counties for tornado frequency.
The number that matters more than frequency
No violent (EF4-5) tornado has been recorded in Denver County in NOAA's 76-year database. Of its 20 recorded tracks, 14 were weak (EF0-1) and 4 significant (EF2-3).
Shelter and safe-room economics
Colorado does not currently have a confirmed state rebate layered on top of FEMA's 75% Hazard Mitigation cost-share, so a Denver 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 Denver County to lose power - outbreak-wide outages across Colorado 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 Denver County's figure does not tell you
Denver County's figure is county-wide, not address-specific. Denver County covers about 153 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. Denver County has about 729,019 residents.