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USGS/Cascades Volcano Observatory, Vancouver, Washington

Cascade Range Volcanoes and Volcanics - Saint Helens Seismic Information

U.S. Geological Survey, Vancouver, Washington
University of Washington, Pacific Northwest Seismic Network, Seattle, Washington
U.S. Geological Survey, Northern California Seismic Network, Menlo Park, California

Mount St. Helens Seismic Data - Last Six Hours

updated every 15 minutes

Provisional data, subject to revision -- "IMPORTANT WARNING!" Please Read

Visit the Alaska Volcano Observatory AVO Webicorders page for information about how to read these webicorders.

Click button for Past Cascade Range Updates Past Updates

Click button for NEWS Mount St. Helens Current Eruption Menu

Return to:
[Cascade Range Current Activity Menu] ...
[Mount St. Helens Current Activity Menu] ...
[Mount St. Helens 2004 Eruption Menu] ...
[News and Current Events Menu] ...

Go to:
[Cascade Range Volcanoes and Volcanics Menu] ...
[Mount St. Helens Menu] ...

Link to:
[USGS Volcano Hazards Program Updates Page (includes Alaska, Hawaii, and Long Valley)] ...
[University of Washington's Pacific Northwest Earthquake Information (current seismicity)]

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March 09, 2012, Mike Randall