Clarks Summit, PA: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Clarks Summit in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Clarks Summit ranks above 37% of the 4,875 cities in this dataset for seismic hazard - the 37th percentile.

Clarks Summit by the numbers

The raw figures: peak ground acceleration 0.061g, short-period spectral response 0.122g, 1-second spectral response 0.044g. Among 193 Pennsylvania cities in this dataset, Clarks Summit ranks 101 for seismic hazard, the 48th percentile within the state. About 5,089 people live in Clarks Summit, Pennsylvania.

What a retrofit costs in Clarks Summit

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

What this means for insurance

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 Clarks Summit address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Clarks Summit'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.