Tornado Risk in Multnomah County, OR
How likely is a tornado in Multnomah County, OR?
5 tornado tracks have crossed Multnomah County since 1991 by NOAA's count, roughly one every 15.2 years - the Minimal band on this site's scale. That is the 18th percentile nationally for tornado frequency. Within Oregon alone, Multnomah County ranks 11 of 36 counties for tornado frequency.
The number that matters more than frequency
No violent (EF4-5) tornado has been recorded in Multnomah County in NOAA's 76-year database. Of its 5 recorded tracks, 5 were weak (EF0-1) and 0 significant (EF2-3).
Shelter and safe-room economics
Oregon does not currently have a confirmed state rebate layered on top of FEMA's 75% Hazard Mitigation cost-share, so a Multnomah County homeowner should expect the full national range: $2,890-$13,280, $7,645 typical.
Power after the storm, not just shelter during it
795,897 people live in Multnomah County, and a tornado outbreak's power loss usually reaches far more of Oregon than the tracks themselves touch. A portable battery unit is the faster, no-fuel way to bridge that outage.
What Multnomah County's figure does not tell you
Multnomah County's figure is county-wide, not address-specific. Multnomah County covers about 431 square miles, so a single touch here counts the same as a single touch in a county a fraction of that size. NOAA also documents that older records undercount weaker tornadoes from before Doppler radar became standard. Multnomah County has about 795,897 residents.