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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.

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

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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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Scientists Discover New Clues to Mount St. Helens Unusual Location

Scientists Discover New Clues to Mount St. Helens Unusual Location

The atypical location of Mount St. Helens may be due to geologic structures that control where deep magmas can rise through the crust, as suggested by...

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MEDIA ADVISORY: Join GeoGirls at Mount St. Helens August 1

MEDIA ADVISORY: Join GeoGirls at Mount St. Helens August 1

Twenty-five middle-school girls from Washington and Oregon are participating in the fourth annual “GeoGirls” outdoor volcano science program at Mount...

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Cascades Volcano Observatory Open House: Come Meet Volcano Scientists

Cascades Volcano Observatory Open House: Come Meet Volcano Scientists

MEDIA ADVISORY

Have you ever wondered what scientists do at a volcano observatory when a volcano is not erupting? There is plenty to accomplish...

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Washington State Volcano Preparedness Month

Washington State Volcano Preparedness Month

May is Volcano Preparedness Month in Washington, providing residents an opportunity to become more familiar with volcanic risk in their communities...

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Geologic maps lay the foundation for this virtual tour of western states volcanoes.

Geologic maps lay the foundation for this virtual tour of western states volcanoes.

Take a virtual geologic tour in the USGS Geonarrative, Volcanic Landscapes.

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Tectonic earthquake detected near Mount St. Helens.

Tectonic earthquake detected near Mount St. Helens.

There is no sign that this is connected to volcanic activity.

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Earthquake Swarm Occurring at Mount Hood

Earthquake Swarm Occurring at Mount Hood

Swarms common in the vicinity of Mount Hood.

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Volcano Watch — Legacy of the Mount St. Helens 1980 eruption still defies perfect solution

Volcano Watch — Legacy of the Mount St. Helens 1980 eruption still defies perfect solution

Thirty-seven years after the May 18, 1980, eruption of Mount St. Helens, Washington, scientists, engineers, land managers, and Federal, State, and...

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Modest uptick in Rainier earthquakes linked to volcano's hydrothermal system.

Modest uptick in Rainier earthquakes linked to volcano's hydrothermal system.

Each swarm provides seismologists with more perspective on the personality of the volcano and aids in our ability to assess hazards in the future.

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Seismologists deploy largest number of seismometers ever at Mount St. Helens—a dense array designed to detect tiny quakes.

Seismologists deploy largest number of seismometers ever at Mount St. Helens—a dense array designed to detect tiny quakes.

Scientists learn more about conditions in the shallow subsurface at this active volcano.

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