Tornado Risk in Oglala Lakota County, SD
Oglala Lakota County, SD: what NOAA's tornado record says
2 tornado tracks have crossed Oglala Lakota County since 2016 by NOAA's count, roughly one every 38.5 years - the Minimal band on this site's scale. That is the 8th percentile nationally for tornado frequency. Within South Dakota alone, Oglala Lakota County ranks 66 of 66 counties for tornado frequency.
The number that matters more than frequency
No violent (EF4-5) tornado has been recorded in Oglala Lakota County in NOAA's 76-year database. Of its 2 recorded tracks, 2 were weak (EF0-1) and 0 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 Oglala Lakota County homeowner should expect the full national range: $2,890-$13,280, $7,645 typical.
Power after the storm, not just shelter during it
13,360 people live in Oglala Lakota 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 Oglala Lakota County's figure does not tell you
Oglala Lakota County's figure is county-wide, not address-specific. Oglala Lakota County covers about 2,094 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. Oglala Lakota County has about 13,360 residents.