Cascades Volcano Observatory


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. 


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.

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