Tornado Risk in Kendall County, IL
Kendall County's tornado history, by the numbers
32 tornado tracks have crossed Kendall County since 1954 by NOAA's count, roughly one every 2.4 years - the Elevated band on this site's scale. That is the 71st percentile nationally for tornado frequency. Within Illinois alone, Kendall County ranks 47 of 102 counties for tornado frequency.
The number that matters more than frequency
Yes. Kendall County has recorded 1 EF4 or EF5 tornado - the strength FEMA's own safe-room guidance is built around, because a standard code-built house is not expected to survive those winds without a hardened room. A county can be lower-frequency overall and still carry this history.
Shelter and safe-room economics
Illinois does not currently have a confirmed state rebate layered on top of FEMA's 75% Hazard Mitigation cost-share, so a Kendall County homeowner should expect the full national range: $2,890-$13,280, $7,645 typical.
Power after the storm, not just shelter during it
143,171 people live in Kendall County, and a tornado outbreak's power loss usually reaches far more of Illinois than the tracks themselves touch. A portable battery unit is the faster, no-fuel way to bridge that outage.
What Kendall County's figure does not tell you
Kendall County's figure is county-wide, not address-specific. Kendall County covers about 320 square miles, so a single touch here counts the same as a single touch in a county a fraction of that size. NOAA also documents that older records undercount weaker tornadoes from before Doppler radar became standard. Kendall County has about 143,171 residents.