Grayson County, KY: Tornado Risk and Shelter Cost
Grayson County's tornado history, by the numbers
NOAA's Storm Prediction Center has recorded 14 tornado tracks touching Grayson County since 1959 - about one every 5.4 years on average. That puts it in our Low band nationally. Against the rest of the country, that is the 39th percentile for frequency. Kentucky has 120 counties in this dataset; Grayson County ranks 34 of them by frequency.
Has Grayson County ever had a violent tornado?
Yes, 1 time: Grayson 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 Grayson 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 Kentucky 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 Grayson County outright can still take its power out - outbreak-scale outages across Kentucky 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. Grayson County covers about 500 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. Grayson County has about 27,070 residents.