• 2010-05-26 20:25:34 Cleveland Advisory Yellow
• 2010-05-26 17:21:39 Kilauea Watch Orange
• 2010-05-25 02:20:36 Mauna Loa Normal Green
• 2010-05-21 22:03:45 Long Valley Volcanic Center Normal Green
• 2010-05-21 20:39:49 Alaskan Volcanoes Normal Green
• 2010-05-21 20:26:49 Cascade Range Normal Green
• 2010-05-21 19:49:08 Pagan Advisory Yellow
• 2010-05-21 19:49:08 Anatahan Normal Green
• 2010-05-03 16:34:06 Yellowstone Normal Green
• 2010-04-23 20:27:31 Redoubt Normal Green

Features

• Mount St. Helens 30th Anniversary
  

  On May 18, 1980, Mount St. Helens erupted with a lateral blast followed by a vertical plume of volcanic ash rose over 80,000 feet. Please see the CVO Mount St. Helens Anniversary page for more information.




• Eyjafjallajökull, Ash, and Eruption Impacts
  

  The recent eruption at Eyjafjallajökull, Iceland has been producing a cloud of steam and volcanic ash that has been affecting air traffic. For more information, please see our Eyjafjallajökull page.




• NVEWS: National Volcano Early Warning System
  

  The National Volcano Early Warning System (NVEWS) is a proposed national-scale plan to ensure that volcanoes are monitored at levels equal to their threats. To learn more, please see our NVEWS page.




• Recovery Funding to Improve Monitoring and Public Safety

  The Volcano Hazards Program has received American Recovery and Reinvestment Act funds for six projects that will benefit volcano monitoring at the high-risk volcanic areas our observatories monitor. For more information, please see the press releases for each observatory: AVO, CVO, HVO, LVO, YVO, and the Northern Mariana Islands.

Past 30 Days Volcano Observatory Notices for Aviation (VONA)

More information and VONA archive

Did you know there are 169 active volcanoes in the United States? Learn more about how and why we monitor volcanoes.

Quick Links

• U.S. Volcano Webcams
• Monitoring Data
• Hazard Assessment Reports and Maps
• Volcanic Ash Information
• Photo Glossary
• FAQs
• Fact Sheets