USGS/Cascades Volcano Observatory, Vancouver, Washington

Cascade Range Current Update

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

CASCADES VOLCANO OBSERVATORY WEEKLY UPDATEFriday, February 3, 2012 10:42 AM PST (Friday, February 3, 2012 18:42 UTC)

CASCADE RANGE VOLCANOES
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Activity Update: All volcanoes in the Cascade Range are at normal levels of background seismicity. These include Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams in Washington State; Mount Hood, Mount Jefferson, Three Sisters, Newberry Volcano, and Crater Lake, in Oregon; and Medicine Lake volcano, Mount Shasta, and Lassen Peak in northern California.

Recent Observations: No unusual geologic activity was apparent at any of the Cascades Volcanoes during the week. Volcano seismicity remained at background levels. Hydrologic field teams collected stream data and serviced monitoring stations in Mount St. Helens drainages.

The U.S. Geological Survey and University of Washington continue to monitor these volcanoes closely and will issue additional updates and changes in alert level as warranted.

For other inquiries please call 360 993-8973.

For additional information, background, images, and other graphics: http://vulcan.wr.usgs.gov

For seismic information on Oregon and Washington volcanoes: http://old.pnsn.org/WEBICORDER/PNSN/welcome.html

For seismic information on California volcanoes: http://earthquakes.usgs.gov/eqcenter/recenteqsus/Maps/special/California_Nevada.php

For a definition of alert levels: http://vulcan.wr.usgs.gov/Volcanoes/Cascades/CurrentActivity/volcano_warning_scheme.html

For a webcam view of Mount St. Helens: http://www.fs.fed.us/gpnf/volcanocams/msh/

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.

Past Updates

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)]

URL for CVO HomePage is: <http://vulcan.wr.usgs.gov/home.html>
URL for this page is: <http://vulcan.wr.usgs.gov/Volcanoes/Cascades/CurrentActivity/cascades_updates.html>
If you have questions or comments please contact: <GS-CVO-WEB@usgs.gov>
02/15/11, Mike Randall
12/26/06, Lyn Topinka
10/21/06, Dina Venezky