How Likely Is a Tornado in Kane County, IL?
Kane County, IL: what NOAA's tornado record says
Kane County has recorded 46 tornado touches in NOAA's 76-year database, a rate of roughly one every 1.7 years - our High band. Put another way: Kane County sees more tornado activity than 85% of US counties. Among 102 Illinois counties in this dataset, Kane County ranks 24 for how often a tornado touches down.
Beyond the frequency band: violent history
39 weak and 5 significant tornadoes make up Kane County's 46-track record - none violent. NOAA has never logged an EF4 or EF5 crossing this county.
The dollar figure Kane County's rating leads to
Cost nationally: $2,890-$13,280, about $7,645 typical. Illinois 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 Illinois this pass.
What a direct hit isn't required for
520,997 people live in Kane 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 this number is, and is not
One caveat before relying on Kane County's number: it is county-wide, and it covers about 519 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. Kane County has about 520,997 residents.