Volcano Hazards Program Observatories and Centers

Monitoring and research at the five volcano observatories in conjunction with the Menlo Science Center in Menlo Park helps advance our understanding of active volcanism and allows the Volcano Hazards Program to provide warnings of impending eruptions in the United States. We monitor earthquake activity, ground deformation, gas chemistry, and other geophysical and hydrologic conditions before, during, and after eruptions. Observations are used to detect activity leading to an eruption, provide real-time emergency information about future and ongoing eruptions, identify hazardous areas around active and potentially active volcanoes, and improve our understanding of how volcanoes erupt and change our environment. The Volcano Disaster Assistance Program also assists other nations prepare for and respond to volcano emergencies.

Alaska Volcano Observatory (AVO): The Alaska Volcano Observatory monitors volcanoes in Alaska and the Commonwealth of the Northern Mariana Islands from its locations in Anchorage and Fairbanks, Alaska. It is supported by the U.S. Geological Survey, the Geophysical Institute of the University of Alaska Fairbanks, and the Alaska Division of Geological and Geophysical Surveys.

California Volcano Observatory (CalVO) The USGS California Volcano Observatory manages the monitoring efforts for volcanoes in California and Nevada from the USGS Western Region Headquarters in Menlo Park, California.

Cascades Volcano Observatory (CVO): The USGS Cascades Volcano Observatory monitors volcanoes in Washington, Oregon and Idaho, and is located in Vancouver, Washington. The USGS Volcano Disaster Assistance Program, which is headquartered at CVO, is supported by the USGS and the U.S. Agency for International Development's Office of Foreign Disaster Assistance.

Hawaiian Volcano Observatory (HVO): The USGS Hawaiian Volcano Observatory is located in Hawai`i Volcanoes National Park on the Big Island of Hawai`i.

Yellowstone Volcano Observatory (YVO) The Yellowstone Volcano Observatory monitors and studies the active geologic processes and hazards of the Yellowstone Plateau volcanic field and its caldera. The Observatory is supported by the U.S. Geological Survey, University of Utah, and the Yellowstone National Park. Yellowstone National Park contains the largest and most diverse collection of natural thermal features in the world. YVO also monitors volcanic activity in Montana, Wyoming, Colorado, Utah, and New Mexico.

Worldwide Volcanology Sites

For worldwide volcano information, please see the Smithsonian's Global Volcanism Program.