De Witt County, IL Tornado Risk & Storm Shelter Cost
De Witt County's tornado history, by the numbers
Since 1955, NOAA has logged 26 tornado tracks crossing De Witt County - one about every 2.9 years, which lands it in our Elevated band. Nationally, De Witt County ranks at the 62nd percentile for tornado frequency. Within Illinois alone, De Witt County ranks 59 of 102 counties for tornado frequency.
De Witt County's EF4-5 history
De Witt County has 1 violent (EF4-5) tornado on record. FEMA centers its safe-room case on exactly this strength, not on how often a county gets touched - a hardened room is the difference between a code-built house surviving an EF4-5 or not.
What a storm shelter costs near De Witt County
For a De Witt 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
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.
Read this before you rely on it
This is a county-level figure, not a per-address probability. De Witt County covers about 398 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. De Witt County has about 15,319 residents.