Clackamas County, OR Tornado Risk & Storm Shelter Cost
How likely is a tornado in Clackamas County, OR?
Since 1957, NOAA has logged 8 tornado tracks crossing Clackamas County - one about every 9.5 years, which lands it in our Low band. Nationally, Clackamas County ranks at the 25th percentile for tornado frequency. Oregon has 36 counties in this dataset; Clackamas County ranks 3 of them by frequency.
Clackamas County's EF4-5 history
Clackamas County's record has no EF4-5 tornado - its 8 tracks split 8 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 Clackamas County
For a Clackamas County homeowner, budget $2,890-$13,280 for a shelter or safe room ($7,645 typical) - this pass found no Oregon-specific rebate on top of FEMA's underlying 75% national cost-share program.
The outage nobody plans for
The storm that misses Clackamas County outright can still take its power out - outbreak-scale outages across Oregon are common well beyond the tracked path. A battery-backup unit handles that without a generator's setup or fuel.
Read this before you rely on it
This is a county-level figure, not a per-address probability. Clackamas County covers about 1,871 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. Clackamas County has about 425,857 residents.