Mount Rainier is experiencing a swarm of hundreds of small earthquakes, the largest since 2009, prompting close monitoring by seismologists. The swarm, believed to be caused by hot fluids moving ...

The top of the mountain is coming down. Five different U.S. mountains, including Mount Rainier, are experiencing ice loss at their peaks, bringing down their highest elevations. The problem is likely ...

A severe winter storm threatens the Cascade and Olympic mountains, with heavy snowfall and winds gusts of up to 65 mph ...

SEATTLE (AP) — 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 ...