California Volcano Information

Volcanoes: More than 500 volcanic vents have been identified in the State of California. At least 76 of these vents have erupted, some repeatedly, during the last 10,000 years. Sooner or later, volcanoes in California will erupt again, and they could have serious impacts on your health and safety. -- Miller, C. Dan, 1989, Potential Hazards from Future Volcanic Eruptions in California: USGS Bulletin 1847, 17p.

Mt. St. Helens, Washington
Photo USGS Mt. St. Helens, Washington

Cascade Range Volcanoes and Volcanics - Current Updates

"More than 500 volcanic vents have been identified in the State of California. At least 76 of these vents have erupted, some repeatedly, during the last 10,000 years. … Sooner or later, volcanoes in California will erupt again, and they could have serious impacts on the health and safety of the State's citizens as well as on its economy.” Miller, C. Dan (USGS)

“California is the most geologically diverse state in the nation. We are known for our earthquakes, landslides and flood hazards. But our nearly forgotten hazard is our volcanoes,” said Dr. John Parrish, the State Geologist of California. (USGS)

Mount Shasta
USGS Photograph taken by Lyn Topinka, 1984

Mt Shasta Cam Updates every 20 min. Web cam courtesy of MacShasta.com

Mount Shasta
Elevation: 14,162 feet
Location: Northern
California, USA

Mount St. Helen
May 22, 1915 eruption -Photo: R.E.Stinson

Mount St. Helen's Cam Updates every 5 min. WebCam courtesy of: USDA Forest Service

Mount St. Helen's
Elevation: 4,500 feet
Location: Washington State/Johnston Ridge Observatory



Active and Potentially Active Volcanoes in California

Information available from: USGS Cascades Volcano Observatory


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