Tornado Risk in Union County, OH
How likely is a tornado in Union County, OH?
12 tornado tracks have crossed Union County since 1963 by NOAA's count, roughly one every 6.3 years - the Low band on this site's scale. That is the 34th percentile nationally for tornado frequency. Among 88 Ohio counties in this dataset, Union County ranks 60 for how often a tornado touches down.
The number that matters more than frequency
No violent (EF4-5) tornado has been recorded in Union County in NOAA's 76-year database. Of its 12 recorded tracks, 9 were weak (EF0-1) and 3 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 Union County homeowner should expect the full national range: $2,890-$13,280, $7,645 typical.
Power after the storm, not just shelter during it
Tornado outbreaks routinely knock out power across Ohio for days, separately from any single house getting hit. A portable battery bank keeps a fridge, phone chargers and a radio running through that gap - cheaper and faster to set up than a generator.
What Union County's figure does not tell you
Union County's figure is county-wide, not address-specific. Union County covers about 432 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. Union County has about 71,721 residents.