Norfolk County, MA Tornado Risk & Storm Shelter Cost
How likely is a tornado in Norfolk County, MA?
Since 1953, NOAA has logged 15 tornado tracks crossing Norfolk County - one about every 5.1 years, which lands it in our Moderate band. Nationally, Norfolk County ranks at the 41st percentile for tornado frequency. Massachusetts has 14 counties in this dataset; Norfolk County ranks 6 of them by frequency.
Norfolk County's EF4-5 history
Norfolk County's record has no EF4-5 tornado - its 15 tracks split 13 weak and 2 significant. That does not rule one out in the future, only that none has been recorded since 1950.
What a storm shelter costs near Norfolk County
For a Norfolk 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
Power loss after a tornado outbreak in Massachusetts often reaches homes the storm itself never touched. A battery-backup unit covers the outage without the fuel and venting a generator needs.
Read this before you rely on it
This is a county-level figure, not a per-address probability. Norfolk County covers about 396 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. Norfolk County has about 740,754 residents.