Cassia County, ID Tornado Risk & Storm Shelter Cost
Cassia County's tornado history, by the numbers
Since 1986, NOAA has logged 10 tornado tracks crossing Cassia County - one about every 7.6 years, which lands it in our Low band. Nationally, Cassia County ranks at the 28th percentile for tornado frequency. Within Idaho alone, Cassia County ranks 6 of 44 counties for tornado frequency.
Cassia County's EF4-5 history
Cassia County's record has no EF4-5 tornado - its 10 tracks split 10 weak and 0 significant. That does not rule one out in the future, only that none has been recorded since 1950.
What a storm shelter costs near Cassia County
For a Cassia County homeowner, budget $2,890-$13,280 for a shelter or safe room ($7,645 typical) - this pass found no Idaho-specific rebate on top of FEMA's underlying 75% national cost-share program.
The outage nobody plans for
25,976 people live in Cassia County, and a tornado outbreak's power loss usually reaches far more of Idaho 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. Cassia County covers about 2,566 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. Cassia County has about 25,976 residents.