Cascades Volcano Observatory

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Field team installs scanning DOAS at Mount St. Helens
June 16, 2021

Field team installs scanning DOAS at Mount St. Helens

USGS Cascades Volcano Observatory Physical Science Technician Brian Meyers installs a data telemetry antenna on a volcano monitoring station at Mount St. Helens. A DOAS scanner is mounted above the flat-panel antenna at the top of the mast. A fiber optic cables transmits the light collected by the DOAS scanner to a spectrometer inside the fiberglass hut. Data is

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May 13, 2021

Status of (mostly) WA Volcanoes: Report to Emergency Managers 2020-21

Jon Major, scientist-in-charge of the USGS Cascades Volcano Observatory, provides an overview of the major volcano hazards in the Cascades, the function and responsibilities of the Cascades Volcano Observatory, and a brief synopsis of what's been going on at Mount Baker, Glacier Peak, Mount Rainier, Mount Adams, Mount St. Helens, and Mount Hood, and CVO’s plans in coming

Washington State Governor Proclaims May 2021 as Volcano Awareness Month
April 30, 2021

Washington State Governor Proclaims May 2021 as Volcano Awareness Mont

Washington State Governor Proclaims May 2021 as Volcano Awareness Month.

April 20, 2021

Mitigating Hazards at Cascade Range Volcanoes

The 1980 eruption of Mount St. Helens was monumental in so many different ways. It had a huge impact on the geography of southwestern Washington, ash affected many people, lives were lost, and lessons were learned. The eruption also led to the creation of the USGS Cascades Volcano Observatory in Vancouver, Washington. Seth Moran talks about three of CVO’s mission areas—

April 6, 2021

CVO Monitoring Program: Keeping an Eye on Cascade Volcanoes

The good news is that volcanoes usually change behavior before they erupt, in ways that are detectable by monitoring instruments. During times of relative quiet, scientists use different sensors and instruments to help visualize and quantify the structures and processes that are occurring beneath a volcano so they can provide a better estimate of what might happen when a

March 23, 2021

Volcano Hazard Maps: Past, Present, and Future

Throughout most of human existence, we haven't known much about how volcanoes work. Because of their immense power, they have terrified and fascinated us, and remain places of great spiritual importance for many people. The lack of knowledge about volcanoes has sometimes resulted in tragic and deadly disasters. But with the emergence of the science of volcanology and as

March 10, 2021

Mount St. Helens—Lives Changed, Lessons Learned, Legacies of 1980

How did the May 18, 1980 eruption of Mount St. Helens change peoples’ lives? Carolyn Driedger talks about events that led up to the 1980 eruption and influenced scientists’ response to it, as well as what happened on May 18, and how the eruption changed people's lives and professions. This talk was presented for the Sno-Isle Libraries’ 2021 Whidbey Reads program.
 

Color photograph of lava lake and rainbow
February 26, 2021

February 26, 2021 — Kīlauea

Heavy rains at the summit of Kīlauea Volcano (Hawaii) cleared on the afternoon of Friday, February 26, 2021, to show the steaming surface of the lava lake at Halema‘uma‘u viewed from the west. A rainbow arches over the lake looking east across the crater toward Kīlauea Iki. This photo was taken within an area of Hawai‘i Volcanoes National Park that remains closed to the

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February 23, 2021

Mount St. Helens Rocked Our World! What we've learned since 1980.

What stories do rocks tell? What techniques do scientists use to study volcanoes? Dr. Heather Wright talks about the May 18, 1980 eruption of Mount St. Helens, provides an overview of volcanoes and how they erupt, and shows why scientists continue to monitor this active volcano, in this presentation to the Sno-Isle Libraries’ 2021 Whidbey Reads program.
 

Ash cloud simulation for an eruption size of 5/18/1980 Mount St Helens
December 16, 2020

Ash cloud simulation for an eruption size of 5/18/1980 Mount St Helens

If Mount St. Helens (Washington) were to have an eruption today the same size as that of May 18, 1980, this model simulation shows the ash cloud reach.

Ash cloud simulation for moderate sized eruption of Mount St. Helens
December 16, 2020

Ash cloud simulation for moderate sized eruption of Mount St. Helens

If Mount St. Helens were to have a moderate sized eruption today (similar to Mount Spurr, Alaska, August 18, 1992), this model shows the ash cloud extent. 

Ash cloud simulation for a small eruption of Mount St. Helens
December 16, 2020

Ash cloud simulation for a small eruption of Mount St. Helens

If Mount St. Helens were to have a small eruption today (similar in size to its July 22, 1980 eruption), this simulation shows the ash cloud extent.