Seismicity has decreased” from 30 events per hour at the peak to a few per hour as of Saturday morning, the U.S. Geological Survey said Saturday.

The BriefMount Rainier's recent seismic swarm has surpassed 2009 records, with 391 events since July 8.Scientists report ...

The so-called earthquake swarm at Mount Rainier dwindled Friday but has surpassed the last large event at the volcano in 2009 ...

The series of earthquakes is the first major swarm of seismic events since 2009. Is it safe if you’re planning on visiting?

The U.S. Geological Survey Cascades Volcano Observatory said the swarm began early Tuesday at the 14,410-foot volcano near ...

A magnitude 2.3 earthquake was recorded under Mount Rainier on Wednesday, the strongest yet in a swarm of over 229 quakes this week. USGS says there's no signs of impending eruption.

More than 300 earthquakes have erupted at Washington's Mount Rainier this week, the largest earthquake swarm at the volcano ...

The 1980 eruption cycle made Mount St. Helens one of the most famous volcanoes in the Cascades. But it is far from the only volcano in the range.

Remembering the deadly Mount St. Helens eruption 45 years later Mount St. Helens erupted 45 years ago, causing the deadliest volcanic disaster in U.S. history. Adel Toay, Drew Mikkelsen, Leah ...

The 103-year-old bridge that served as the only gateway to the northwest corner of Mount Rainier National Park has been permanently closed by the Washington State Department of Transportation ...

Washington is earthquake and volcano country. With all the concern about recent earthquake activity at Mt. Adams and the 45th anniversary of the eruption of Mt. St. Helens what would happen if Mt.