How Likely Is a Tornado in Mahnomen County, MN?
Mahnomen County, MN: what NOAA's tornado record says
Mahnomen County has recorded 26 tornado touches in NOAA's 76-year database, a rate of roughly one every 2.9 years - our Elevated band. Put another way: Mahnomen County sees more tornado activity than 61% of US counties. Within Minnesota alone, Mahnomen County ranks 48 of 87 counties for tornado frequency.
Beyond the frequency band: violent history
20 weak and 4 significant tornadoes make up Mahnomen County's 26-track record - none violent. NOAA has never logged an EF4 or EF5 crossing this county.
The dollar figure Mahnomen County's rating leads to
Cost nationally: $2,890-$13,280, about $7,645 typical. Minnesota 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 Minnesota this pass.
What a direct hit isn't required for
Power loss after a tornado outbreak in Minnesota often reaches homes the storm itself never touched. A battery-backup unit covers the outage without the fuel and venting a generator needs.
What this number is, and is not
One caveat before relying on Mahnomen County's number: it is county-wide, and it covers about 558 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. Mahnomen County has about 5,296 residents.