Calhoun County, IL Tornado Risk & Storm Shelter Cost
Calhoun County's tornado history, by the numbers
Since 1958, NOAA has logged 7 tornado tracks crossing Calhoun County - one about every 10.9 years, which lands it in our Low band. Nationally, Calhoun County ranks at the 20th percentile for tornado frequency. Illinois has 102 counties in this dataset; Calhoun County ranks 101 of them by frequency.
Calhoun County's EF4-5 history
Calhoun County's record has no EF4-5 tornado - its 7 tracks split 5 weak and 2 significant. That does not rule one out in the future, only that none has been recorded since 1950.
What a storm shelter costs near Calhoun County
For a Calhoun 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
4,224 people live in Calhoun 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.
Read this before you rely on it
This is a county-level figure, not a per-address probability. Calhoun County covers about 254 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. Calhoun County has about 4,224 residents.