Benton County, OR: Tornado Risk and Shelter Cost
Benton County's tornado history, by the numbers
NOAA's Storm Prediction Center has recorded 2 tornado tracks touching Benton County since 1997 - about one every 38.5 years on average. That puts it in our Minimal band nationally. Against the rest of the country, that is the 9th percentile for frequency. Among 36 Oregon counties in this dataset, Benton County ranks 24 for how often a tornado touches down.
Has Benton County ever had a violent tornado?
Nothing violent in Benton County's file: 2 tracks total, topping out at significant (EF2-3) strength on 0 of them, zero at EF4-5.
Paying for it, if Benton 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 Oregon 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 Benton County outright can still take its power out - outbreak-scale outages across Oregon 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. Benton County covers about 675 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. Benton County has about 98,899 residents.