News

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...

Mount St. Helens was exploding! The first eruption in the Cascades since 1914–1917 (Lassen Peak) started on March 27, 1980. April became a frenzied...

Exposures in valleys surrounding Mount St. Helens reveal records of diverse geologic processes including debris avalanche, lahar, huge water wave on a...