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MSH80_august_7_eruption_from_south_08-07-80.jpg August 7, 1980, eruption of Mount St. Helens as seen from the south.
USGS Photograph taken on August 7, 1980, by C.Dan Miller.
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MSH80_august_7_eruption_plume_rising_08-07-80.jpg August 7, 1980, eruption plume of Mount St. Helens, with emerging plume. (See next image)
USGS Photograph taken on August 7, 1980, by Lyn Topinka.
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[TIF Format, 15 M]
MSH80_august_7_eruption_plume_08-07-80_bw.jpg August 7, 1980, eruption of Mount St. Helens, with emerging plume. (See previous image)
USGS Photograph taken on August 7, 1980, by Lyn Topinka.
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MSH80_august_7_eruption_with_plane_08-07-80.jpg August 7, 1980, eruption plume of Mount St. Helens, with small aircraft (yellow circle) to give an idea of size.
USGS Photograph taken on August 7, 1980, by Lyn Topinka.
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MSH80_pyroclastic_flow_USGS_scientist_from_north_08-07-80_bw.jpg Beginning of pyroclastic flow from the August 7, 1980 eruption.
USGS Photograph taken on August 7, 1980, by Peter W. Lipman.
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MSH80_pyroclastic_flow_from_st_helens_crater_08-07-80.jpg During the May 18, 1980 eruption, at least 17 separate pyroclastic flows descended the flanks of Mount St. Helens. Pyroclastic flows typically move at speeds of over 60 miles per hour (100 kilometers/hour) and reach temperatures of over 800 Degrees Fahrenheit (400 degrees Celsius). Photographed here, a pyroclastic flow from the August 7, 1980 eruption stretches from Mount St. Helens' crater to the valley floor below.
USGS Photograph taken on August 7, 1980, by Peter W. Lipman.
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MSH80_pumice_august_eruption_muddy_drop_09-22-80.jpg Pumice from the August 7, 1980 eruption, as seen at the Muddy Drop.
USGS Photograph taken on September 22, 1980, by Lyn Topinka.
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MSH80_muddy_bridge_remains_aug7_pumice_09-23-80.jpg Remains of the bridge crossing the Muddy River, with pumice from the August 7, 1980, eruption lining the banks of the river.
USGS Photograph taken on September 23, 1980, by Lyn Topinka.
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[TIF Format, 25 M]
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