The magnitude 4.1 earthquake that stuck after 3 a.m. in the center of Olympic National Park is one of the strongest tests yet of the new ShakeAlert system in Washington. While not considered a ...

The U.S. Geological Survey was still trying to unravel how an alert was sent Thursday morning for a nonexistent 5.9 earthquake outside Dayton, Nevada. A quake of that size wouldn't be implausible.

Bay Area residents received an erroneous 5.9 magnitude earthquake alert Thursday from the USGS Shake Alert system. USGS scientists quickly removed the automated alert about a quake in Dayton, Nevada ...

(TNS) — Nevada will be added to the West Coast earthquake early warning system under a federal spending bill signed into law last month, according to U.S. Rep. Mark Amodei. The legislation includes ...