How Likely Is a Tornado in St. Lawrence County, NY?
St. Lawrence County, NY: what NOAA's tornado record says
St. Lawrence County has recorded 11 tornado touches in NOAA's 76-year database, a rate of roughly one every 6.9 years - our Low band. Put another way: St. Lawrence County sees more tornado activity than 32% of US counties. New York has 62 counties in this dataset; St. Lawrence County ranks 16 of them by frequency.
Beyond the frequency band: violent history
9 weak and 2 significant tornadoes make up St. Lawrence County's 11-track record - none violent. NOAA has never logged an EF4 or EF5 crossing this county.
The dollar figure St. Lawrence County's rating leads to
Cost nationally: $2,890-$13,280, about $7,645 typical. New York 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 New York this pass.
What a direct hit isn't required for
106,198 people live in St. Lawrence County, and a tornado outbreak's power loss usually reaches far more of New York 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 St. Lawrence County's number: it is county-wide, and it covers about 2,680 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. St. Lawrence County has about 106,198 residents.