Studying tree rings helped scientists pinpoint when Mount Rainier last sent a lahar down its steep slopes, which could help ...

The Daily Mail reported Mount Rainier has shown unusual seismic activity over three days. However, the active stratovolcano is behaving normally, according to a monitoring group. PNSN cited ...

Washington state may not have to worry about hurricanes, but it is volcano country. The United States has 161 active volcanoes – all in the western U.S. – but only 18 are classified as a "very high ...

Mount Rainier’s seismic sensors showed unusual activity for several days, prompting widespread attention online, but experts told KIRO 7 News the readings came from a malfunctioning instrument rather ...

Mount Rainier has rattled through thousands of tiny earthquakes this year, a reminder that America’s most lethal volcano is very much alive beneath its ice. Those quakes, and a burst of viral alarmism ...

Mount Rainier, the active stratovolcano that experienced an unusual but benign swarm of tiny earthquakes this past summer, isn't suddenly showing seismic-tremor activity despite a recent news report ...