Cass County, MN Tornado Risk & Storm Shelter Cost
Cass County's tornado history, by the numbers
Since 1957, NOAA has logged 31 tornado tracks crossing Cass County - one about every 2.5 years, which lands it in our Elevated band. Nationally, Cass County ranks at the 70th percentile for tornado frequency. Minnesota has 87 counties in this dataset; Cass County ranks 28 of them by frequency.
Cass County's EF4-5 history
Cass County has 2 violent (EF4-5) tornados 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 Cass County
For a Cass County homeowner, budget $2,890-$13,280 for a shelter or safe room ($7,645 typical) - this pass found no Minnesota-specific rebate on top of FEMA's underlying 75% national cost-share program.
The outage nobody plans for
Tornado outbreaks routinely knock out power across Minnesota for days, separately from any single house getting hit. A portable battery bank keeps a fridge, phone chargers and a radio running through that gap - cheaper and faster to set up than a generator.
Read this before you rely on it
This is a county-level figure, not a per-address probability. Cass County covers about 2,021 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. Cass County has about 31,442 residents.