How Likely Is a Tornado in Mendocino County, CA?
Mendocino County's tornado history, by the numbers
Mendocino County has recorded 4 tornado touches in NOAA's 76-year database, a rate of roughly one every 18.9 years - our Minimal band. Put another way: Mendocino County sees more tornado activity than 14% of US counties. California has 58 counties in this dataset; Mendocino County ranks 34 of them by frequency.
Beyond the frequency band: violent history
3 weak and 0 significant tornadoes make up Mendocino County's 4-track record - none violent. NOAA has never logged an EF4 or EF5 crossing this county.
The dollar figure Mendocino County's rating leads to
Cost nationally: $2,890-$13,280, about $7,645 typical. California 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 California this pass.
What a direct hit isn't required for
A direct hit is not required for Mendocino County to lose power - outbreak-wide outages across California 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 Mendocino County's number: it is county-wide, and it covers about 3,507 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. Mendocino County has about 89,175 residents.