While VALT will be missed for sentimental reasons, plans are underway to install a replacement on the crater floor away from the reach of Crater...

Over the past several months, small magnitude earthquakes have been located at Mount St. Helens. The seismicity is similar to what was observed at...

Over the past three months, seismicity at Mount St. Helens has been elevated but remains within the normal range of background seismicity. Most of the...

The 1980 eruption of Mount St. Helens had a profound impact on how we live with active volcanoes. Looking back over the last four decades, we have...

Volcanoes are an incredible feature of Earth’s geologic environment – at once awe-inspiring and terrifying. They remind us that the planet we call...

The combination of a continuous MultiGAS station within Mount St. Helens' crater and the new scanning DOAS represents state-of-the-art in geochemical...

You are invited to a public lecture about the 1980 Mount St. Helens eruptions.

While most of the Cascade Range volcanoes are located in remote areas, volcanic processes like ashfall and lahars can put large populations at risk...

The USGS Cascades Volcano Observatory joins the Whidbey Reads program to offer virtual talks about Mount St. Helens' May 18, 1980 eruption, and how...

If scientists armed with today's monitoring tools and knowledge could step back in time to the two months before May 18, 1980, they would have been...