Sunday marks the 45th anniversary of the Mount St. Helens eruption, a natural disaster that left an indelible mark on the Pacific Northwest.

Forty-five years ago on May 18, 1980, Mount St. Helens in the state of Washington violently erupted. Here’s a look at volcanoes, then and now. The 1980 Mount St. Helens eruption began with a ...

In 2019, mountain lions, pumas and black bears were all observed on nature cameras for the first time since the eruption. Donald Brown is the Lead Scientist for Mount St. Helens with the U.S ...

The anniversary of the eruption of Mount St Helens gives so many pause, recalling where they were that day, May 18, 1980. “My first grade memory is that, day turned to night almost immediately ...

A series of instruments around the volcano indicate a reservoir has been refilling with magma since its last eruption, gradually inflating so that it's bulging upward. A 3D bathymetric map showing ...