N​early 75% of the country is at risk for a potentially damaging earthquake, according to a recently updated USGS map.

“And in the case of these maps, we have increased the hazard in many areas ... The update was released last year. The color-coded map shows a range of earthquake probability across the U.S ...

Additional information collected about the earthquake may also prompt U.S.G.S. scientists to update the shake-severity map. Aftershocks can occur days, weeks or even years after the first earthquake.

Over fifty scientists and engineers conducted the USGS National Seismic Hazard Model (NSHM). This model was used to create a ...