Honolulu County, HI Tornado Risk & Storm Shelter Cost
How likely is a tornado in Honolulu County, HI?
Since 1957, NOAA has logged 20 tornado tracks crossing Honolulu County - one about every 3.8 years, which lands it in our Moderate band. Nationally, Honolulu County ranks at the 51st percentile for tornado frequency. Within Hawaii alone, Honolulu County ranks 1 of 5 counties for tornado frequency.
Honolulu County's EF4-5 history
Honolulu County's record has no EF4-5 tornado - its 20 tracks split 17 weak and 3 significant. That does not rule one out in the future, only that none has been recorded since 1950.
What a storm shelter costs near Honolulu County
For a Honolulu County homeowner, budget $2,890-$13,280 for a shelter or safe room ($7,645 typical) - this pass found no Hawaii-specific rebate on top of FEMA's underlying 75% national cost-share program.
The outage nobody plans for
The storm that misses Honolulu County outright can still take its power out - outbreak-scale outages across Hawaii 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. Honolulu County covers about 601 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. Honolulu County has about 998,747 residents.