Allamakee County, IA: Tornado Risk and Shelter Cost
Allamakee County's tornado history, by the numbers
NOAA's Storm Prediction Center has recorded 12 tornado tracks touching Allamakee County since 1954 - about one every 6.3 years on average. That puts it in our Low band nationally. Against the rest of the country, that is the 34th percentile for frequency. Within Iowa alone, Allamakee County ranks 98 of 99 counties for tornado frequency.
Has Allamakee County ever had a violent tornado?
Yes, 1 time: Allamakee 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 Allamakee 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 Iowa 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
14,184 people live in Allamakee County, and a tornado outbreak's power loss usually reaches far more of Iowa 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. Allamakee County covers about 639 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. Allamakee County has about 14,184 residents.