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Volcanic threat assessment helps prioritize risk reduction efforts at U.S. volcanoes

Volcanic threat assessment helps prioritize risk reduction efforts at U.S. volcanoes

The U.S. Geological Survey assesses active and potentially active volcanoes in the U.S., focusing on history, hazards and the exposure of people...

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Volcanic Threat Assessment help prioritize risk reduction efforts at U.S. volcanoes

Volcanic Threat Assessment help prioritize risk reduction efforts at U.S. volcanoes

Since 1980, there have been 120 eruptions and 52 episodes of notable volcanic unrest at 44 U.S. volcanoes.

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Playing telephone with Miss Information

Playing telephone with Miss Information

Have you ever played a game of telephone? Where one person says something to their neighbor, and the message is passed from person to person? The...

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Photo and Video Chronology - Kīlauea - October 21, 2018

Photo and Video Chronology - Kīlauea - October 21, 2018

Great Hawaii ShakeOut

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Volcano Watch — Kīlauea hazard assessments include analyses of salts on volcanic ash

Volcano Watch — Kīlauea hazard assessments include analyses of salts on volcanic ash

Sulfur dioxide (SO2)-rich emissions have long been a feature of Kīlauea Volcano's summit activity. However, vigorous volcanic ash production during...

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GeoGirls Rock! USGS women encourage and support the next generation of scientists

GeoGirls Rock! USGS women encourage and support the next generation of scientists

Mount St. Helens volcano loomed in the distance as 25 middle-school “GeoGirls” signed in, received a name tag, dropped their overnight gear and...

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"Shocking" stories about measuring deformation in Yellowstone

"Shocking" stories about measuring deformation in Yellowstone

About 30 kilometers west of the Yellowstone National Park boundary, in Idaho, UNAVCO* field engineer Tom Lyman surveys the damage at GPS station P361...

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Photo and Video Chronology - Kīlauea - October 15, 2018

Photo and Video Chronology - Kīlauea - October 15, 2018

Mauna Loa and Mauna Kea as seen from Kīlauea's lower East Rift Zone

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Volcano Watch — Aftershocks of the 2018 magnitude-6.9 earthquake expected to continue

Volcano Watch — Aftershocks of the 2018 magnitude-6.9 earthquake expected to continue

On May 4, 2018, a powerful magnitude-6.9 earthquake on the south flank of Kīlauea Volcano shook the Island of Hawai‘i. It was the largest quake in...

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New USGS Data Release Product

New USGS Data Release Product

Data Release: Volcanic ash leachate and rainwater chemistry from increased 2018 activity of Kīlauea Volcano, Hawaiʻi

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Yellowstone's rivers—the key to monitoring hydrothermal activity

Yellowstone's rivers—the key to monitoring hydrothermal activity

We often talk about monitoring Yellowstone. To most people, this implies tracking earthquake activity over time, or how the ground moves up and down...

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Volcano Watch — Volcano collapses mark the beginning and end of USGS scientist’s career

Volcano Watch — Volcano collapses mark the beginning and end of USGS scientist’s career

My 37-year stint with the U.S. Geological Survey—16 years at the Cascades Volcano Observatory (CVO) and 21 at the Hawaiian Volcano Observatory (HVO)...

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