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,

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