Nantucket County, MA Tornado Risk & Storm Shelter Cost
Nantucket County, MA: what NOAA's tornado record says
Nantucket County carries no recorded tornado touch anywhere in NOAA's 1950-2025 database - a real zero, the same result most of the Northeast and Pacific coast gets. Nationally, Nantucket County ranks at the 2nd percentile for tornado frequency. Massachusetts has 14 counties in this dataset; Nantucket County ranks 14 of them by frequency.
Nantucket County's EF4-5 history
Nantucket County's record has no EF4-5 tornado - its 0 tracks split 0 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 Nantucket County
For a Nantucket County homeowner, budget $2,890-$13,280 for a shelter or safe room ($7,645 typical) - this pass found no Massachusetts-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 Massachusetts 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. Nantucket County covers about 46 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. Nantucket County has about 14,670 residents.