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.

Many of the aftershocks felt on Thursday originated off the coast, although some occurred more inland, according to a map from the USGS. A map from the USGS showing where recent earthquakes have ...

Along the coast, the damage would be extensive. Places like Warrenton, Seaside and Toledo would also be unrecognizable and mostly immersed in water. Explore the map at coast.noaa.gov/slr and see ...

A silent colossus lurks off the Pacific coast, threatening hundreds of miles ... The team completed a detailed map of more than 550 miles of the subduction zone, down to the Oregon-California ...