Decades after Mount St. Helens' eruption sent almost 90 billion cubic feet of debris into the upper Toutle Valley, sediment ...

Now Washington State officials are looking over state plans for evacuation and other plans in case of a big eruption at Mt.

Recent increased seismic activity at Mt. Adams has brought state, tribal, and federal leaders together to reassess their eruption plans.

When Mount St. Helens in Washington erupted nearly 45 years ago, it killed 57 people, destroyed hundreds of homes, spread ash to at least 10 other states and blasted a wide, horseshoe-shaped crater ...

Much like in 1980, if we started seeing more frantic rumbling, then the media coverage would become intense, and it could ...

The sediment retention dam in Toutle has become less and less effective as it fills, switching from catching about 80% of passing sediment to allowing 80% to pass, according to ...

Mount Adams, Washington state's largest active volcano, is witnessing a surge in seismic activity. The seismic activity has ...

MOUNT ST. HELENS, Wash. (KATU) — Snowmobilers, including one with a serious leg injury, were rescued following an avalanche on Mount St. Helens on Feb. 17. The incident occurred when three ...

Mount St. Helens erupted 45 years ago in May ... prompting a new plan in case of a future volcanic eruption.

Monitoring stations around Mount Adams noted nine earthquakes ranging from magnitude 0.9 to 2.0 near the volcano between ...

Identifying a solution that maintains safe water levels of Spirit Lake while addressing the resources and values present in ...