Mount Rainier is an active stratovolcano 45 miles southeast of Tacoma and 60 miles south-southeast of Seattle. Its last eruption was "a light dusting of ash" in 1894, the USGS said in a report. Large eruptions haven't occurred for more than 1,000 years.

Officials are tracking the largest swarm of earthquakes in more than 15 years on Washington's Mount Rainier but say there is no indication that the cluster of quakes is cause for concern. The U.S. Geological Survey Cascades Volcano Observatory said the swarm began early Tuesday at the 14,

Volcanoes are rumbling as scientists monitor earthquakes at Washington's Mount Rainier and Alaska's Iliamna volcano.

Hundreds of small earthquakes were detected at Mount Rainier on Tuesday in the largest such swarm at the active stratovolcano since 2009, according to the U.S. Geological Survey. The swarm began shortly before 1:30 a.m. near Mount Rainier’s summit, with the largest earthquake being a 1.7 magnitude, the USGS said on X just after 9:30 a.m. Tuesday.

Mount Rainier, the active volcano towering above southwestern Washington state, started rumbling — very lightly — on Tuesday. A swarm of small earthquakes was detected under the mountain triggering focused monitoring from officials. But researchers have determined there is no current threat of an eruption.

A series of earthquakes near Japan’s remote Tokara Islands over the past two weeks, along with a major eruption from a long-dormant volcano earlier this week, has added to growing speculation about a disaster striking Japan on July 5.

After a lull, Taal Volcano in Batangas province recorded renewed seismic activity over the past 24 hours, the Philippine Institute of Volcanology and Seismology (Phivolcs) reported.