Omak, WA: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Omak is Category D. High seismic hazard - this is the category most of coastal California, the Pacific Northwest, and other active fault regions fall into. Code mandates significant seismic detailing and restricts irregular structural configurations. This is the category the Brace + Bolt scope (cripple-wall bracing, foundation bolting) is built for. Rank it against the rest of the country and Omak sits at the 81th percentile for seismic hazard among 4,875 US cities.

How Omak compares

USGS's underlying values for Omak: 0.189g peak ground acceleration, 0.422g at short period, 0.158g at 1 second. Within Washington alone, Omak ranks 103 of 125 cities by seismic hazard - the 18th percentile in-state. Omak has a population of about 5,167.

Bracing and bolting: the actual cost

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 Washington 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 Washington.

Insuring against this, not just retrofitting

A Omak 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 Omak's figures come from

Omak's Category D 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 D does and doesn't tell you about Omak.