Cascades Volcano Observatory


Filter Total Items: 124
Date published: June 23, 2021

New Scanning DOAS Installed at Mount St. Helens

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

Date published: June 11, 2021

Mount Hood's June 5, 2021 Earthquake

Normal faulting? No change in volcanic hazard? Cascades Volcano Observatory geophysicists describe how they interpret earthquake data using the June 5, 2021 Magnitude 3.9 earthquake at Mount Hood as an example.

Date published: June 5, 2021

M3.9 earthquake and swarm occur at Mount Hood on June 5, 2021

The M 3.9 earthquake occurred at a depth of 2.7 miles below sea level. At this time, seismologists do not believe the earthquake swarm signifies a change in volcanic hazard at Mount Hood, and will continue to monitor the swarm and issue updates as the situation warrants.

Date published: June 2, 2021

Opportunity to Comment on Mount Rainier Lahar Detection and Seismic Monitoring System

Expansion of the lahar detection system at Mount Rainier will improve the Cascades Volcano Observatory's overall volcano monitoring and lahar detection capacity and provide more rapid notification to the immediate area and surrounding communities.  

Date published: June 2, 2021

Status of (mostly) Washington's Volcanoes: Report to Emergency Managers 2020-2021

While most of the Cascade Range volcanoes are located in remote areas, volcanic processes like ashfall and lahars can put large populations at risk. Frequent communication and interactions among scientists and emergency managers will help prepare us for future hazards.

Date published: May 12, 2021

Christina Neal to Lead USGS Volcano Science Center

ANCHORAGE, Alaska — On May 9, 2021, Christina (Tina) Neal became the new director of the U.S. Geological Survey Volcano Science Center, home of the Alaska, California, Cascades, Hawaiian and Yellowstone volcano observatories.  

Date published: May 10, 2021

May is Volcano Awareness Month in Washington State

May is Volcano Awareness Month in Washington State, providing residents an opportunity to become more familiar with volcanic hazards in their communities and learn about steps they can take to reduce potential impacts.

Date published: March 25, 2021

Series of Virtual Talks Focuses on Mount St. Helens and Volcano Monitoring

The USGS Cascades Volcano Observatory joins the Whidbey Reads program to offer virtual talks about Mount St. Helens' May 18, 1980 eruption, and how the volcano has shaped the study of volcanoes and volcano monitoring.

Date published: March 2, 2021

Short-lived burst of earthquakes occur at Mount Hood, March 1, 2021

Burst-like swarms commonly interpreted to be caused by movement of hydrothermal fluids (water).

Date published: February 18, 2021

Brief earthquake swarm detected beneath Mount Rainier

While the seismicity represents a temporary uptick in activity, Mount Rainier remains at normal, background levels of activity.

Date published: January 25, 2021

A Geophysicist's Perspective on Mount Hood Monitoring Stations and the Recent Earthquake Swarm

A CVO geophysicist discusses how the monitoring stations installed at Mount Hood in 2020 provide insight into the recent Mount Hood earthquake swarm.