Clarion County, PA: Tornado Risk and Shelter Cost
Clarion County, PA: what NOAA's tornado record says
NOAA's Storm Prediction Center has recorded 16 tornado tracks touching Clarion County since 1954 - about one every 4.7 years on average. That puts it in our Moderate band nationally. Against the rest of the country, that is the 43rd percentile for frequency. Among 67 Pennsylvania counties in this dataset, Clarion County ranks 29 for how often a tornado touches down.
Has Clarion County ever had a violent tornado?
Nothing violent in Clarion County's file: 16 tracks total, topping out at significant (EF2-3) strength on 2 of them, zero at EF4-5.
Paying for it, if Clarion 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 Pennsylvania 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
36,855 people live in Clarion County, and a tornado outbreak's power loss usually reaches far more of Pennsylvania 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. Clarion County covers about 601 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. Clarion County has about 36,855 residents.