Tornado Risk in Darke County, OH
Darke County's tornado history, by the numbers
30 tornado tracks have crossed Darke County since 1958 by NOAA's count, roughly one every 2.5 years - the Elevated band on this site's scale. That is the 69th percentile nationally for tornado frequency. Among 88 Ohio counties in this dataset, Darke County ranks 11 for how often a tornado touches down.
The number that matters more than frequency
No violent (EF4-5) tornado has been recorded in Darke County in NOAA's 76-year database. Of its 30 recorded tracks, 24 were weak (EF0-1) and 6 significant (EF2-3).
Shelter and safe-room economics
Ohio does not currently have a confirmed state rebate layered on top of FEMA's 75% Hazard Mitigation cost-share, so a Darke 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 Ohio often reaches homes the storm itself never touched. A battery-backup unit covers the outage without the fuel and venting a generator needs.
What Darke County's figure does not tell you
Darke County's figure is county-wide, not address-specific. Darke County covers about 598 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. Darke County has about 51,462 residents.