Tornado Risk in Charles Mix County, SD
Charles Mix County's tornado history, by the numbers
45 tornado tracks have crossed Charles Mix County since 1954 by NOAA's count, roughly one every 1.7 years - the High band on this site's scale. That is the 84th percentile nationally for tornado frequency. Among 66 South Dakota counties in this dataset, Charles Mix 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 Charles Mix County in NOAA's 76-year database. Of its 45 recorded tracks, 37 were weak (EF0-1) and 7 significant (EF2-3).
Shelter and safe-room economics
South Dakota does not currently have a confirmed state rebate layered on top of FEMA's 75% Hazard Mitigation cost-share, so a Charles Mix County homeowner should expect the full national range: $2,890-$13,280, $7,645 typical.
Power after the storm, not just shelter during it
9,343 people live in Charles Mix County, and a tornado outbreak's power loss usually reaches far more of South Dakota than the tracks themselves touch. A portable battery unit is the faster, no-fuel way to bridge that outage.
What Charles Mix County's figure does not tell you
Charles Mix County's figure is county-wide, not address-specific. Charles Mix County covers about 1,097 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. Charles Mix County has about 9,343 residents.