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Overlay represents area within CVO's area of responsibility.
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Cascade Range Weekly Update
Friday, May 22, 2015 3:44 PM
 Current Volcano Alert Level: NORMAL
 Current Aviation Color Code: GREEN
Cascades Volcano Observatory's mission
The U.S. Geological Survey's Cascades Volcano Observatory strives to serve the national interest by helping people to live knowledgeably and safely with volcanoes in WA, OR, and ID.

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Young Volcanoes in WA, OR & ID1

Monitoring stations proposed for Glacier Peak.
May 22, 2015

The Mount Baker-Snoqualmie National Forest is accepting comments on a USGS–CVO proposal to install four volcano monitoring stations at Glacier Peak. Glacier Peak is a potentially active volcano posing mudflow, ash fall, landslide, flood and earthquake hazards to nearby communities and metropolitan areas downstream. With only one seismometer currently operating, there is a need for more robust monitoring to accurately detect the early signs of volcanic unrest.

The four collocated seismic and GPS stations include electronic monitoring equipment, antenna, batteries and solar panels mounted to an equipment enclosure. Additional information on this project, the Scoping Letter and how to comment is available from the Mount Baker-Snoqualmie National Forest, Glacier Peak Monitoring Stations. Comments are due June 20, 2015. Follow this link for more information on Glacier Peak, its history and hazards.

May is Volcano Preparedness Month in Washington State.
May 05, 2015

During May 2015, the Washington Emergency Management Division, Pierce County Department of Emergency Management, USGS-Cascades Volcano Observatory, and other emergency management agencies are coordinating events for Volcano Preparedness Month. Residents are encouraged to become familiar with volcano risk within their communities and to take steps that reduce potential effects on people and property. Informative talks by USGS-CVO scientists are planned:

  • May 5: Carolyn Driedger will talk about the 1980 eruption of Mount St. Helens and how it will help us better prepare and respond to an eruption of Mount Rainier. May 5 at 6 pm at the Eatonville Pierce County Library;
  • May 6: Carolyn Driedger will talk about the 1980 eruption of Mount St. Helens and how it will help us better prepare and respond to an eruption of Mount Rainier. May 6 at 6:30 pm at the Puyallup Public Library;
  • May 8: Richard Waitt will read from his book, In the Path of Destruction, offering a chronology of events leading up to the 1980 eruption of Mount St. Helens and its catastrophic aftermath. May 8 at 7:30 pm at Powell's City of Books on Burnside;
  • May 12: Larry Mastin will give a Science Cafe talk, hosted by the Pacific Science Center, on the 79 A.D. eruption of Vesuvius and Pliny's gift to volcanology with a comparison to the 1980 eruption of Mount St. Helens. May 12 at 6:30 pm for the Science Cafe at the Swiss Restaurant and Pub in Tacoma, Wa;
  • May 16: John Ewert will deliver a 'State of the Washington Cascades' talk describing the recent activities of the state's volcanoes. May 16 at 3:00 pm at the Washington State History Museum
  • May 24: Larry Mastin will give a talk on forecasting ash fall hazards in the Pacific Northwest. May 24 at 1:00 pm at the Seattle Public Library.
  • May 28: Carolyn Driedger will talk about the 1980 eruption of Mount St. Helens and how it will help us better prepare and respond to an eruption of Mount Rainier. May 28 at 7 pm at the City of Roy Library.

GeoGirls summer field camp offered at Mount St. Helens.
April 21, 2015

Applications are being accepted for a five-day geology and technology field camp for middle school girls at Mount St. Helens. GeoGirls will explore the volcano, work with scientists, do hands-on experiments and create a short video and website about their week to share with family and friends. Applications are accepted now until May 20. Visit the Mount St. Helens Science and Learning Center GeoGirls web page for more information on the application process.

Social media features daily posts of what was happening at Mount St. Helens 35 years ago.
March 20, 2015

The 1980 activity of Mount St. Helens began on March 20 with an intensifying swarm of earthquakes. The first steam-blast eruption occurred a week later, with high levels of seismic activity, formation of a summit crater, and deformation of the north flank of the volcano. This continued up to the climactic eruption on the morning of May 18. Follow the USGS scientists as the events unfolded in 1980, with daily posts about volcanic activity, pictures, and video on the USGS Volcanoes Facebook page.

In the Path of Destruction: Chronicling the experiences of eruption survivors.
March 20, 2015

Mount St. Helens' summit slid away on a sunny morning May 18, 1980, unleashing a powerful landslide and blast that flattened miles of forest, flooded valleys and sent an ash cloud high into the sky; 57 people were killed. Soon after the eruption, USGS–Cascades Volcano Observatory scientist Richard Waitt began interviewing witnesses and survivors. Initially, the project was to help scientists document volcanic phenomena, assess hazards, and learn from the mountain. It soon became clear however, that the stories added unique details to the hard data we scientists were gathering. After more than three decades and hundreds of interviews, these stories are published in Path of Destruction, Eyewitness Chronicles of Mount St. Helens — a new glimpse at a defining cataclysm in the region's history. Read more on Mount St. Helens' eruptive past.

Registration is open for Mount Rainier educator workshop.
January 30, 2015

Join us July 27–31, 2015, for a 5-day educator workshop at Mount Rainier. The workshop features informative talks on Cascade volcanoes and volcanic processes, ideas for classroom activities, hikes into the field, and tips for organizing school field trips to visit the volcano. There is no charge for this workshop and camping is available to participants. Registration information is at Mount Rainier Teacher Professional Development.

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