Edmunds County, SD: Tornado Risk and Shelter Cost
Edmunds County, SD: what NOAA's tornado record says
NOAA's Storm Prediction Center has recorded 31 tornado tracks touching Edmunds County since 1955 - about one every 2.5 years on average. That puts it in our Elevated band nationally. Against the rest of the country, that is the 70th percentile for frequency. South Dakota has 66 counties in this dataset; Edmunds County ranks 27 of them by frequency.
Has Edmunds County ever had a violent tornado?
Yes, 1 time: Edmunds County has an EF4-5 tornado on record. Wherever that history exists, FEMA's safe-room case applies regardless of how often the county gets touched overall.
Paying for it, if Edmunds County's history says you should
A storm shelter or in-residence safe room typically runs $2,890-$13,280 nationally, around $7,645 for a common single-family installation. No state-administered rebate program specific to South Dakota was confirmed for this site - FEMA's own Hazard Mitigation Assistance grants fund 75% of an approved safe room nationwide, but only some states currently run a homeowner-facing application on top of that.
The gap a shelter does not cover
The storm that misses Edmunds County outright can still take its power out - outbreak-scale outages across South Dakota are common well beyond the tracked path. A battery-backup unit handles that without a generator's setup or fuel.
County-level, not address-level
Treat this as a county-wide figure, not a prediction for one address. Edmunds County covers about 1,126 square miles, so a single touch here counts the same as a single touch in a county a fraction of that size. And records from before the 1990s, NOAA notes, undercount weaker tornadoes in areas with less storm-spotting coverage at the time. Edmunds County has about 4,027 residents.