The ShakeAlert system that warns about imminent shaking arriving from earthquakes sent a false alarm across California on Thursday morning for a magnitude 5.9 temblor that did not happen.

The federal government and earthquake experts blamed a technical glitch for the alert that sent warnings hundreds of miles ...

Gov. Gavin Newsom and state lawmakers are pointing fingers at the federal government after a false alert went out to millions ...

Governor Gavin Newsom is responding to reduce federal aid after Californians received a false earthquake alert on Dec. 4, ...

The false alert Thursday mistakenly claimed a magnitude 5.9 earthquake had struck near Carson City, Nevada. Here’s what happened.

California’s governor said a false earthquake alert sent by the U.S. Geological Survey’s early warning system last week ...

The U.S. Geological Survey is investigating the cause of a false alert sent out reporting a 5.9 earthquake that never occurred Thursday morning. An automatic detection system triggered cell phone ...

“On December 4, 2025, the ShakeAlert EEW system released an incorrect alert for a magnitude 5.9 earthquake near Reno and Carson City, Nevada,” the statement read. “The event did not occur, and has ...

A notification about a magnitude-5.9 earthquake in western Nevada Thursday morning was a false alert, the USGS said. The quake alert generated by the ShakeAlert early warning system indicated an ...