How Likely Is a Tornado in Douglas County, IL?
Douglas County, IL: what NOAA's tornado record says
Douglas County has recorded 29 tornado touches in NOAA's 76-year database, a rate of roughly one every 2.6 years - our Elevated band. Put another way: Douglas County sees more tornado activity than 67% of US counties. Within Illinois alone, Douglas County ranks 52 of 102 counties for tornado frequency.
Beyond the frequency band: violent history
22 weak and 7 significant tornadoes make up Douglas County's 29-track record - none violent. NOAA has never logged an EF4 or EF5 crossing this county.
The dollar figure Douglas 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
Power loss after a tornado outbreak in Illinois 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 Douglas County's number: it is county-wide, and it covers about 417 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. Douglas County has about 19,824 residents.