Knox County, IL: Tornado Risk and Shelter Cost
Knox County, IL: what NOAA's tornado record says
NOAA's Storm Prediction Center has recorded 33 tornado tracks touching Knox County since 1967 - about one every 2.3 years on average. That puts it in our Elevated band nationally. Against the rest of the country, that is the 73rd percentile for frequency. Among 102 Illinois counties in this dataset, Knox County ranks 45 for how often a tornado touches down.
Has Knox County ever had a violent tornado?
Nothing violent in Knox County's file: 33 tracks total, topping out at significant (EF2-3) strength on 5 of them, zero at EF4-5.
Paying for it, if Knox 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
48,716 people live in Knox County, and a tornado outbreak's power loss usually reaches far more of Illinois than the tracks themselves touch. A portable battery unit is the faster, no-fuel way to bridge that outage.
County-level, not address-level
Treat this as a county-wide figure, not a prediction for one address. Knox County covers about 716 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. Knox County has about 48,716 residents.