The largest active volcano in Washington state has been rocked by a series of earthquakes, putting experts on high alert. Mount Adams is a 12,000-foot-tall stratovolcano located in south-central ...

An expert has urged California residents to "remain alert" after a series of earthquakes struck the state within 48 hours as she warns the string of tremors could signal a larger earthquake to come.

Multiple earthquakes shook California's Bay Area Thursday afternoon. The earthquakes occurred near Hayward, around 20 miles southeast of Oakland, with the strongest one hitting at 1:59 p.m. local ...