Magnolia, TX: what USGS's seismic model says

Magnolia carries Seismic Design Category A under USGS's ASCE 7-16 model. Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. Rank it against the rest of the country and Magnolia sits at the 12th percentile for seismic hazard among 4,875 US cities.

Where Magnolia sits in Texas

USGS's underlying values for Magnolia: 0.033g peak ground acceleration, 0.069g at short period, 0.04g at 1 second. Within Texas alone, Magnolia ranks 231 of 384 cities by seismic hazard - the 40th percentile in-state. Magnolia has a population of about 6,506.

Retrofit economics for Magnolia

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 Texas 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 Texas.

Earthquake insurance for a Magnolia home

A Magnolia 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 Magnolia's figures come from

Magnolia's Category A 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 A does and doesn't tell you about Magnolia.