U.S. Geological Survey ([USGS](https://www.usgs.gov)) National Seismic Hazard Mapping Project ([NSHMP](https://earthquake.usgs.gov/hazards/)) code for performing probabilistic seismic hazard (PSHA) and related analyses. These codes are intended for use with seismic hazard models developed by the NSHMP for the U.S. and its territories.