The largest ever earthquake swarm has been recorded at Washington's Mount Rainier, with officials saying there is no cause for concern.

An earthquake swarm at Mount Rainier is considered one of the largest ever recorded for the volcano, according to the United States Geological Survey.

By comparison, researchers in 2009 located 120 earthquakes at Mount Rainier during a three-day swarm — the largest being a 2.5 magnitude originally identified as a 2.3 — although more than ...

SEATTLE — 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 ...

The U.S. Geological Survey said it and other agencies were monitoring the situation and would issue additional alerts "as ...

A swarm of earthquakes, including one with a magnitude of 4.3, shook San Bernardino County on Thursday morning. According to the U.S. Geological Survey, the quake struck at 9:32 a.m. The ...

Since the swarm began, hundreds of tiny earthquakes have occurred near the volcano's summit, with the largest's magnitude detected at 1.7. Mount Rainier towering over Tacoma, Washington.

A Massive Amount of Miniature Earthquakes Shake Mt. Rainier The Pacific Northwest Seismic Network tracks all swarms, noting that one of the most significant shocks registered 2.3 on the Richter scale.

By comparison, researchers in 2009 located 120 earthquakes at Mount Rainier during a three-day swarm — the largest being a 2.5 magnitude originally identified as a 2.3 — although more than ...

By comparison, researchers in 2009 located 120 earthquakes at Mount Rainier during a three-day swarm — the largest being a 2.5 magnitude originally identified as a 2.3 — although more than ...

By comparison, researchers in 2009 located 120 earthquakes at Mount Rainier during a three-day swarm — the largest being a 2.5 magnitude originally identified as a 2.3 — although more than ...