Volcano Updates | U.S. Geological Survey - USGS.gov
Jan 2, 2026 · The Yellowstone Volcano Observatory (YVO) provides long-term monitoring of volcanic and earthquake activity in the Yellowstone National Park region. Yellowstone is the site of the largest …
Yellowstone | U.S. Geological Survey - USGS.gov
The Yellowstone Plateau volcanic field developed through three volcanic cycles that span two-million years. Two of the eruptions are considered some of the world's largest volcanic events.
Questions About Yellowstone Volcanic History - USGS.gov
Volcanic activity began in the Yellowstone National Park region a little before about 2 million years ago. Molten rock (magma) rising from deep within the Earth produced three cataclysmic eruptions more …
Summary of Yellowstone Eruption History | U.S. Geological Survey
Nov 7, 2023 · Hot spot volcanism is responsible for Yellowstone eruptions. Yellowstone's volcanism is the most recent in a 17 million-year history of volcanic activity that progressed from southwest to …
Yellowstone Volcano Observatory | U.S. Geological Survey
The Yellowstone Volcano Observatory (YVO) is a consortium of nine state and federal agencies who provide timely monitoring and hazard assessment of volcanic, hydrothermal, and earthquake activity …
Newest Volcano Notice Including Yellowstone - USGS
Jan 2, 2026 · The Yellowstone Volcano Observatory (YVO) provides long-term monitoring of volcanic and earthquake activity in the Yellowstone National Park region. Yellowstone is the site of the largest …
Is Yellowstone overdue for an eruption? When will Yellowstone erupt?
The most recent volcanic activity at Yellowstone consisted of rhyolitic lava flows that erupted approximately 70,000 years ago. The largest of these flows formed the Pitchstone Plateau in …
FAQs & Facts | U.S. Geological Survey - USGS.gov
Based upon these questions, we have compiled a list of the most frequently asked with answers provided by geologists and geophysicists who monitor activity and conduct research at Yellowstone …
Questions About Supervolcanoes | U.S. Geological Survey
Below, Yellowstone Volcano Observatory scientists answer questions that arose after this program aired that relate to supervolcanoes, volcanic hazards, and Yellowstone.
What would happen if a "supervolcano" eruption occurred again at ...
What would happen if a "supervolcano" eruption occurred again at Yellowstone? If another large, caldera-forming eruption were to occur at Yellowstone, its effects would be worldwide.