How Likely Is a Tornado in Harper County, KS?
Harper County's tornado history, by the numbers
Harper County has recorded 67 tornado touches in NOAA's 76-year database, a rate of roughly one every 1.1 years - our High band. Put another way: Harper County sees more tornado activity than 94% of US counties. Kansas has 105 counties in this dataset; Harper County ranks 15 of them by frequency.
Beyond the frequency band: violent history
1 tornado touching Harper County reached violent (EF4-5) strength since 1950. That single fact carries more weight for the shelter decision than the county's overall frequency band.
The dollar figure Harper County's rating leads to
Cost nationally: $2,890-$13,280, about $7,645 typical. Kansas has no state rebate program confirmed here; FEMA's underlying 75% cost-share exists nationwide, but applying through a state program is what usually makes it real, and none was found for Kansas this pass.
What a direct hit isn't required for
A direct hit is not required for Harper County to lose power - outbreak-wide outages across Kansas regularly reach homes and businesses well outside the actual tracks. A battery bank covers that gap without a generator's fuel and venting needs.
What this number is, and is not
One caveat before relying on Harper County's number: it is county-wide, and it covers about 801 square miles, so a single touch counts the same as one in a county a fraction of that size. Weaker pre-1990s tornadoes are also documented as undercounted in NOAA's own record. Harper County has about 5,413 residents.