Oliver County, ND Tornado Risk & Storm Shelter Cost
Oliver County's tornado history, by the numbers
Since 1990, NOAA has logged 12 tornado tracks crossing Oliver County - one about every 6.3 years, which lands it in our Low band. Nationally, Oliver County ranks at the 33rd percentile for tornado frequency. Within North Dakota alone, Oliver County ranks 50 of 53 counties for tornado frequency.
Oliver County's EF4-5 history
Oliver County's record has no EF4-5 tornado - its 12 tracks split 10 weak and 1 significant. That does not rule one out in the future, only that none has been recorded since 1950.
What a storm shelter costs near Oliver County
For a Oliver County homeowner, budget $2,890-$13,280 for a shelter or safe room ($7,645 typical) - this pass found no North Dakota-specific rebate on top of FEMA's underlying 75% national cost-share program.
The outage nobody plans for
1,882 people live in Oliver County, and a tornado outbreak's power loss usually reaches far more of North Dakota 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. Oliver County covers about 722 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. Oliver County has about 1,882 residents.