How Likely Is a Tornado in Washington County, TN?
Washington County, TN: what NOAA's tornado record says
Washington County has recorded 9 tornado touches in NOAA's 76-year database, a rate of roughly one every 8.5 years - our Low band. Put another way: Washington County sees more tornado activity than 27% of US counties. Among 95 Tennessee counties in this dataset, Washington County ranks 70 for how often a tornado touches down.
Beyond the frequency band: violent history
5 weak and 4 significant tornadoes make up Washington County's 9-track record - none violent. NOAA has never logged an EF4 or EF5 crossing this county.
The dollar figure Washington County's rating leads to
Cost nationally: $2,890-$13,280, about $7,645 typical. Tennessee 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 Tennessee this pass.
What a direct hit isn't required for
139,642 people live in Washington County, and a tornado outbreak's power loss usually reaches far more of Tennessee than the tracks themselves touch. A portable battery unit is the faster, no-fuel way to bridge that outage.
What this number is, and is not
One caveat before relying on Washington County's number: it is county-wide, and it covers about 327 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. Washington County has about 139,642 residents.