USGS Volcano Hazards Program Volcano Update
CVO update page and observatory web site
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.
Mount St. Helens has been at Volcano Alert Level NORMAL (Aviation Color Code GREEN) since July 10, 2008.
Recent Observations: Data from monitoring equipment have indicated only background levels of activity at Cascade Range volcanoes during the week. A series of strong Pacific storms has pounded the Cascades Range this week, however, sometimes producing noisy seismometer outputs unrelated to volcanic or tectonic activity. No earthquakes have been recorded at Lassen Peak volcano since abatement of the November 2-16 swarm.
Mount St. Helens has been at Volcano Alert Level NORMAL (Aviation Color Code GREEN) since July 10, 2008.
Recent Observations: Data from monitoring equipment have indicated only background levels of activity at Cascade Range volcanoes during the week. A series of strong Pacific storms has pounded the Cascades Range this week, however, sometimes producing noisy seismometer outputs unrelated to volcanic or tectonic activity. No earthquakes have been recorded at Lassen Peak volcano since abatement of the November 2-16 swarm.
Update in Common Alerting Protocol (CAP) format
