Some 230 million people in the United States face the potential of damaging earthquakes in 100 years, according to the latest U.S. National Seismic Hazard Model, or NSHM. That’s about 40 million ...

produce the National Seismic Hazard Model. These maps, based on research into earthquake sources such as faults and how seismic waves move through the earth’s crust, are used to determine the ...

USGS shows an interactive map of where ... A preliminary earthquake measuring 3.9 on the Richter scale hit 31.1 kilometers southeast of Port Angeles, Washington in the Olympic National Park ...