The western United States is home to 20 potentially active volcanoes. Just over half of these have shown activity in the past 2000 years.
The volcanoes of the western United States, especially those in the Cascades, are the result of subduction of oceanic plates beneath the edge of the North American Plate. The oceanic plates are made at [...]
Continue reading about Potentially Active Volcanoes of the West
Under the current U.S. Geological Survey Alert Level Terminology, Mount St. Helens volcano status is at “watch” level. There are four levels in the system: Normal, Advisory, Watch, and Warning.
Here is the most current update from the USGS:
U.S. Geological Survey, Vancouver, Washington
University of Washington, Pacific Northwest Seismic Network, Seattle, Washington
Wednesday, February 6, 2008 08:46 [...]
Continue reading about Mount St. Helens Current Status: “Watch”
