Marion County, IL: Tornado Risk and Shelter Cost
Marion County, IL: what NOAA's tornado record says
NOAA's Storm Prediction Center has recorded 38 tornado tracks touching Marion County since 1953 - about one every 2 years on average. That puts it in our Elevated band nationally. Against the rest of the country, that is the 78th percentile for frequency. Among 102 Illinois counties in this dataset, Marion County ranks 36 for how often a tornado touches down.
Has Marion County ever had a violent tornado?
Nothing violent in Marion County's file: 38 tracks total, topping out at significant (EF2-3) strength on 6 of them, zero at EF4-5.
Paying for it, if Marion 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 Illinois 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
A direct hit is not required for Marion County to lose power - outbreak-wide outages across Illinois regularly reach homes and businesses well outside the actual tracks. A battery bank covers that gap without a generator's fuel and venting needs.
County-level, not address-level
Treat this as a county-wide figure, not a prediction for one address. Marion County covers about 573 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. Marion County has about 36,437 residents.