HIFLD OPEN US PGA 10Pct50Yrs BC poly

Uniform-hazard ground motion maps and their underlying GIS data were prepared for PGA and horizontal spectral accelerations at 0.2, 1.0, and 5.0 second period, with a probability of exceedance of 2%, 5% and 10% in 50 years, for NEHRP soil site classes B/C and D (VS30 equal to 760 and 260 m/s, respectively).Full dataset can be downloaded from: 04. Uniform-hazard ground motion maps for the conterminous U.S., Alaska, and Hawaii - ScienceBase-Catalog