Warr Acres, OK: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Warr Acres is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Warr Acres in the 67th percentile nationally for seismic hazard - higher than 67% of the 4,875 US cities USGS was checked against here.

How Warr Acres compares

The raw figures: peak ground acceleration 0.194g, short-period spectral response 0.32g, 1-second spectral response 0.081g. Among 75 Oklahoma cities in this dataset, Warr Acres ranks 17 for seismic hazard, the 78th percentile within the state. About 10,456 people live in Warr Acres, Oklahoma.

Bracing and bolting: the actual cost

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Oklahoma. A typical retrofit still runs $5,000-$10,000 nationally, about $7,000 for a common single-family job.

Insuring against this, not just retrofitting

Outside California, earthquake coverage is typically sold as an endorsement added to a standard homeowners policy, not a separate product - worth asking about directly when getting a home-insurance quote for a Warr Acres address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Warr Acres's numbers. The guide to what a Seismic Design Category actually means covers why a category is never a substitute for an engineer's assessment of one specific house.