Cascades Volcano Observatory

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Mount Rainier rises above Tacoma, Washington and boat harbor, which...
December 31, 2011

Mount Rainier rises above Tacoma, WA and boat harbor, which may be ...

Mount Rainier rises above Tacoma, Washington and boat harbor, which may be impacted during the next eruption of the volcano.

December 31, 2011

Time-series of dome & glacier growth at Mount St. Helens, WA

The video shows time-lapse changes in the lava dome and Crater Glacier from 2004-2012. The images were created from 1:12,000 scale vertical aerial photographs combined with ground control points from campaign GPS and targets. Photogrammetry software was used to collect a 3-D point cloud and combined to make a digital elevation model (DEM). Information regarding volume and

Global Positioning System receiver (called a GPS monument) at North...
August 16, 2011

Global Positioning System receiver (called a GPS monument) at North...

Global Positioning System receiver (called a GPS monument) at North Rim Station, a monitoring location at Newberry volcano, Oregon.

Newberry caldera with Paulina Peak, Big Obsidian Flow and Paulina L...
July 11, 2011

Newberry caldera with Paulina Peak, Big Obsidian Flow and Paulina Lake

View looking south across Newberry caldera towards the Big Obsidian flow (left of center) and Paulina Peak, with Paulina Lake in foreground. Photo taken from the north rim of the caldera.

Gas sampling with a CO2 Infrared Spectrometer at Mount St. Helens' ...
July 6, 2011

Gas sampling with CO2 Infrared Spectrometer at Mount St. Helens

Gas sampling with a CO2 Infrared Spectrometer at Mount St. Helens' September Lobe lava dome, Washington.

Mt. St. Helens at sunset
June 30, 2011

Mt. St. Helens viewed at sunset

View of Mt. St. Helens at sunset, taken sometime after the crater forming eruption in 1980.

Aerial view of lakes and cinder cone at Newberry Volcano Caldera.
January 23, 2011

Aerial view of lakes and cinder cone at Newberry Volcano Caldera.

A view looking northeast across the central caldera of Newberry Volcano.  Paulina Lake is in the foreground and East Lake is in the distance.  The Central Pumice Cone lies between the two lakes. Near the bottom of the photo at the south edge of Paulina Lake, the two hills are named the Lakeshore Domes. The volcano is covered in snow and the lakes have ice on their surface

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Suspended sediment sample collection from the North Fork Toutle Riv...
December 16, 2010

Suspended sediment sample collection from the North Fork Toutle Riv...

Suspended sediment sample collection from the North Fork Toutle River above the Sediment Retention Structure, downstream from Mount St. Helens.

video thumbnail: Mount St. Helens: May 18, 1980
May 10, 2010

Mount St. Helens: May 18, 1980

USGS scientists recount their experiences before, during and after the May 18, 1980 eruption of Mount St. Helens. Loss of their colleague David A. Johnston and 56 others in the eruption cast a pall over one of the most dramatic geologic moments in American history.

May 10, 2010

Mount St. Helens: A Catalyst for Change

The May 18, 1980 eruption of Mount St. Helens triggered a growth in volcano science and volcano monitoring. Five USGS volcano observatories have been established since the eruption. With new technologies and improved awareness of volcanic hazards USGS scientists are helping save lives and property across the planet.