Decatur County, IN: Tornado Risk and Shelter Cost
Decatur County's tornado history, by the numbers
NOAA's Storm Prediction Center has recorded 25 tornado tracks touching Decatur County since 1965 - about one every 3 years on average. That puts it in our Elevated band nationally. Against the rest of the country, that is the 60th percentile for frequency. Indiana has 92 counties in this dataset; Decatur County ranks 30 of them by frequency.
Has Decatur County ever had a violent tornado?
Yes, 1 time: Decatur 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 Decatur County's history says you should
A storm shelter or in-residence safe room typically runs $2,890-$13,280 nationally (around $7,645 typical). Indiana's Indiana Department of Homeland Security's Residential Safe Room Program covers 75% of an approved project, up to $5,000 - bringing a typical job down to roughly $722.5-$8,280 out of pocket, when the program is currently funded.
The gap a shelter does not cover
The storm that misses Decatur County outright can still take its power out - outbreak-scale outages across Indiana 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. Decatur County covers about 373 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. Decatur County has about 26,421 residents.