Henry County, IL Tornado Risk & Storm Shelter Cost
How likely is a tornado in Henry County, IL?
Since 1956, NOAA has logged 71 tornado tracks crossing Henry County - one about every 1.1 years, which lands it in our High band. Nationally, Henry County ranks at the 95th percentile for tornado frequency. Illinois has 102 counties in this dataset; Henry County ranks 9 of them by frequency.
Henry County's EF4-5 history
Henry County's record has no EF4-5 tornado - its 71 tracks split 50 weak and 17 significant. That does not rule one out in the future, only that none has been recorded since 1950.
What a storm shelter costs near Henry County
For a Henry County homeowner, budget $2,890-$13,280 for a shelter or safe room ($7,645 typical) - this pass found no Illinois-specific rebate on top of FEMA's underlying 75% national cost-share program.
The outage nobody plans for
The storm that misses Henry County outright can still take its power out - outbreak-scale outages across Illinois are common well beyond the tracked path. A battery-backup unit handles that without a generator's setup or fuel.
Read this before you rely on it
This is a county-level figure, not a per-address probability. Henry County covers about 823 square miles, so a single touch here counts the same as a single touch in a county a fraction of that size. Pre-radar-era records (before the 1990s) are also documented by NOAA as undercounting weaker tornadoes in sparsely-instrumented areas. Henry County has about 48,177 residents.