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Ash cloud simulation for an eruption size of 5/18/1980 Mount St Helens
December 16, 2020

Ash cloud simulation for an eruption size of 5/18/1980 Mount St Helens

If Mount St. Helens (Washington) were to have an eruption today the same size as that of May 18, 1980, this model simulation shows the ash cloud reach.

Ash cloud simulation for moderate sized eruption of Mount St. Helens
December 16, 2020

Ash cloud simulation for moderate sized eruption of Mount St. Helens

If Mount St. Helens were to have a moderate sized eruption today (similar to Mount Spurr, Alaska, August 18, 1992), this model shows the ash cloud extent. 

Ash cloud simulation for a small eruption of Mount St. Helens
December 16, 2020

Ash cloud simulation for a small eruption of Mount St. Helens

If Mount St. Helens were to have a small eruption today (similar in size to its July 22, 1980 eruption), this simulation shows the ash cloud extent.

Plot of fumarole temperature at the SNIF monitoring station Mount St. Helens, Washington
September 8, 2020

30 days fumarole temperature, SNIF monitoring station Mount St. Helens

Past 30 days fumarole temperature data at SNIF monitoring station, Mount St. Helens Washington.

August 26, 2019

“Science is amazing”: GeoGirls explore Mount St. Helens

During Aug. 4-8, 2019, U.S. Geological Survey women scientists, university researchers and Mount St. Helens Institute staff led 25 middle-school girls from Washington and Oregon in the fifth annual “GeoGirls” outdoor volcano science program at Mount St. Helens, Washington.
 

small white cliff with grass on top
August 12, 2019

Pyroclastic Flow Outcrop on the Pumice Plain at Mount St. Helens

This photo shows an outcrop of pyroclastic flow deposits near Willow Creek on the Pumice Plain at Mount St. Helens. The dramatic lines crossing the outcrop indicate contacts between different layers of pyroclastic flow deposits. Two participants of the 2019 GeoGirls program are shown studying the outcrop, using it to understand the eruptive history of the volcano. GeoGirls

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Girls standing in a large circle around a volcano monitoring station
August 5, 2019

The GeoGirls Visit a Volcano Monitoring Station at Mount St. Helens

The GeoGirls visit a volcano monitoring station on the east side of Mount St. Helens, finding out how scientists use different monitoring methods (seismic, GPS, tiltmeter) to understand more about the volcano.

GeoGirls 2019 group photo, with Mount St. Helens in the background
August 5, 2019

GeoGirls 2019 Group Photo

GeoGirls 2019 group photo, with Mount St. Helens in the background.

Girls hike along a trail at Mount St. Helens
August 5, 2019

GeoGirls Hike the Pumice Plain at Mount St. Helens

The GeoGirls hike the Pumice Plain at Mount St. Helens, examining lava outcrops and volcanic sediment.

Girls stand in circle with one pointing a paper on the ground
August 5, 2019

The GeoGirls Create Field Drawings

The GeoGirls create field drawings of 1980 pyroclastic flow deposits on Mount St. Helens’ Pumice Plain.

Girls stand in stream and take measurements
August 5, 2019

GeoGirls Hike to Willow Creek

GeoGirls hike to Willow Creek, on Mount St. Helens’ Pumice Plain, to learn more about the ecology of the blast zone and how the area has recovered since the catastrophic May 18, 1980, eruption. Here, they look at stream characteristics and how it has influenced the return of life to the area.

People standing with lights in a dark cave
August 4, 2019

GeoGirls Venture into Ape Cave

GeoGirls venture into Ape Cave, a 2,000-year-old lava tube on the south flank of Mount St. Helens, as they learn about Mount St. Helens’ eruptive history and lava flows.