How Likely Is a Tornado in Owyhee County, ID?
Owyhee County, ID: what NOAA's tornado record says
Owyhee County has recorded 5 tornado touches in NOAA's 76-year database, a rate of roughly one every 15.2 years - our Minimal band. Put another way: Owyhee County sees more tornado activity than 15% of US counties. Idaho has 44 counties in this dataset; Owyhee County ranks 19 of them by frequency.
Beyond the frequency band: violent history
5 weak and 0 significant tornadoes make up Owyhee County's 5-track record - none violent. NOAA has never logged an EF4 or EF5 crossing this county.
The dollar figure Owyhee County's rating leads to
Cost nationally: $2,890-$13,280, about $7,645 typical. Idaho 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 Idaho this pass.
What a direct hit isn't required for
Tornado outbreaks routinely knock out power across Idaho for days, separately from any single house getting hit. A portable battery bank keeps a fridge, phone chargers and a radio running through that gap - cheaper and faster to set up than a generator.
What this number is, and is not
One caveat before relying on Owyhee County's number: it is county-wide, and it covers about 7,668 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. Owyhee County has about 12,748 residents.