Trempealeau County, WI Tornado Risk & Storm Shelter Cost
How likely is a tornado in Trempealeau County, WI?
Since 1954, NOAA has logged 25 tornado tracks crossing Trempealeau County - one about every 3 years, which lands it in our Elevated band. Nationally, Trempealeau County ranks at the 60th percentile for tornado frequency. Within Wisconsin alone, Trempealeau County ranks 34 of 72 counties for tornado frequency.
Trempealeau County's EF4-5 history
Trempealeau County's record has no EF4-5 tornado - its 25 tracks split 21 weak and 4 significant. That does not rule one out in the future, only that none has been recorded since 1950.
What a storm shelter costs near Trempealeau County
For a Trempealeau County homeowner, budget $2,890-$13,280 for a shelter or safe room ($7,645 typical) - this pass found no Wisconsin-specific rebate on top of FEMA's underlying 75% national cost-share program.
The outage nobody plans for
30,801 people live in Trempealeau County, and a tornado outbreak's power loss usually reaches far more of Wisconsin 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. Trempealeau County covers about 733 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. Trempealeau County has about 30,801 residents.