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CVO dismantles Mount St. Helens’ VALT seismic station after 18 years in service.

CVO dismantles Mount St. Helens’ VALT seismic station after 18 years in service.

While VALT will be missed for sentimental reasons, plans are underway to install a replacement on the crater floor away from the reach of Crater...

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Volcano Watch — Cruising Chain of Craters Road: Recent earthquakes and past volcanism

Volcano Watch — Cruising Chain of Craters Road: Recent earthquakes and past volcanism

The upper East Rift Zone (UERZ) of Kīlauea was a shaky place this past weekend. This region extends southeast from Kaluapele (Kīlauea’s summit caldera...

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Mount St. Helens seismicity elevated but within the range of background levels (February to June 2024)

Mount St. Helens seismicity elevated but within the range of background levels (February to June 2024)

Over the past several months, small magnitude earthquakes have been located at Mount St. Helens. The seismicity is similar to what was observed at...

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Preparing for volcano hazards: Where is the world’s largest lahar evacuation drill held?

Preparing for volcano hazards: Where is the world’s largest lahar evacuation drill held?

At around 14,410-feet Mount Rainier, a snowcapped volcano in the Cascade Range, towers above the Puget Lowlands.  

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Monitoring stations detect small magnitude earthquakes at Mount Hood (December 8-13, 2023)

Monitoring stations detect small magnitude earthquakes at Mount Hood (December 8-13, 2023)

These small magnitude earthquakes are consistent with movement along a fault and do not signify a change in volcano hazard at Mount Hood.

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Uptick in earthquake activity at Mount St. Helens remains within background levels (July 15 - December 2023)

Uptick in earthquake activity at Mount St. Helens remains within background levels (July 15 - December 2023)

Over the past three months, seismicity at Mount St. Helens has been elevated but remains within the normal range of background seismicity. Most of the...

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Tonga’s Hunga eruption produced the most intense lightning ever recorded

Tonga’s Hunga eruption produced the most intense lightning ever recorded

The eruption produced 2,600 flashes per minute at peak intensity. Scientists used the lightning to peer into the ash cloud, teasing out new details of...

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Mount Rainier reminds us that September is National Preparedness Month

Mount Rainier reminds us that September is National Preparedness Month

Interesting cloud formation at Mount Rainier's summit sparks interest in its geologic past and preparedness for future eruptions.

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USGS Offers Emergency Managers a New Tool to Assess Lahar Hazards at Mount Rainier

USGS Offers Emergency Managers a New Tool to Assess Lahar Hazards at Mount Rainier

U.S. Geological Survey scientists studying Mount Rainier and its hazards for the past 70 years have long recognized that the greatest danger may not...

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USGS Releases Five-year Nationwide Strategic Plan for Volcano Hazards

USGS Releases Five-year Nationwide Strategic Plan for Volcano Hazards

The U.S. Geological Survey recently released a new Volcano Hazards Program Strategic Science Plan for 2022-2026.

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Volcanoes and USGS Volcano Science: Just the Facts

Volcanoes and USGS Volcano Science: Just the Facts

Volcanoes are an incredible feature of Earth’s geologic environment – at once awe-inspiring and terrifying. They remind us that the planet we call...

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Slight uptick in earthquakes at Newberry Volcano (March 24-April 3, 2022)

Slight uptick in earthquakes at Newberry Volcano (March 24-April 3, 2022)

During March 24 to April 3, 2022, seismologists observed a slight uptick in seismic activity at Newberry Volcano. The earthquakes occurred in an area...

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