Morehead City's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Morehead City is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Morehead City ranks above 25% of the 4,875 cities in this dataset for seismic hazard - the 25th percentile.

Morehead City by the numbers

USGS's underlying values for Morehead City: 0.044g peak ground acceleration, 0.091g at short period, 0.047g at 1 second. Within North Carolina alone, Morehead City ranks 143 of 147 cities by seismic hazard - the 3th percentile in-state. Morehead City has a population of about 9,963.

What a retrofit costs in Morehead City

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by North Carolina specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in North Carolina.

Insuring against this, not just retrofitting

A Morehead City homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Morehead City's figures come from

Morehead City's Category B and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category B does and doesn't tell you about Morehead City.