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Filters: Tags: Skamania County, Washington (X)

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Slide description and index card: Aerial view northeasterly across northwest flank of Mount St. Helens and canyon of South Fork Toutle River. Skamania County, Washington. September 28, 1979. (Part of plane wing visible at left).
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These slides of the July 22, 1980 eruption of Mount St. Helens were taken by Jim Vallance, who was in a U.S. Forest Service fixed wing aircraft and by Mike Doukas, Harry Glicken, and Rick Hoblitt who were in a U.S. Geological Survey helicopter. There were three major eruptive pulses on July 22, 1980. They begin at 17:14, 18:30 and 19:02 PDT. Slides no. 5 through 25 were taken between 18:25:20 and 18:26:30 This sequence was taken while moving counter-clockwise from the north to the west flank of Mount St. Helens at a distance of about 7 miles and while changing elevation from about 10,000 to 12,000 feet. Approximate 3 seconds after slide no. 14. (Wing of aircraft visible). Skamania County, Washington. (Photo by J....
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Typed caption accompanying slide: Stereopair with slide no. 64 taken at 19:11. The plume encounters an atmospheric boundary and is planed off into an anvil shape at about 60,000 feet. Skamania County, Washington. (Photo by J. Vallance) Note: Slide numbers 43 - 50 were taken at 19:01 and show the pyroclastic flow as it advances northward. Skamania County, Washington. July 22, 1980. Slide number 51 was taken at 19:02. Slide numbers 52 - 55 were taken at 19:03. Slide numbers 56 - 57 were taken at 19:04. Slide numbers 58 and 59 were taken at 19:04 and 19:05. Slide numbers 60 - 62 are views of the eruption and were taken at 19:06. Slide no. 52, msh_vjw00052_ct, is highlighted in this photo record. Slide no....
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Index card: Aerial view southeast of approximately upper half of Mount St. Helens; lower half and surrounding countryside obscured by cloud cover. View shows bulge, summit crater, ashfall on slopes. Skamania County, Washington. (End of plane wing visible in lower left).
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Slide description: Nearer aerial view of summit of Mount St. Helens, looking toward the northeastward of the two craters; septum still exists between the two. Skamania County, Washington. April 2, 1980. No index card available.
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Slide description and index card: Aerial view of Mount St. Helens, looking south over "Floating Island" lava flow. Skamania County, Washington. September 28, 1979.
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Slide description: Similar oblique aerial view of southeast side of Mount St. Helens - ash being deflated from southwest flank. Skamania County, Washington. April 2, 1980. (Part of plane wing visible at right).


map background search result map search result map Plume on Mount St. Helens. Skamania County, Washington. 1983. These slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. Degassing, Spirit Lake. Mount St. Helens, Skamania County, Washington. 1980. Aerial view northeast across northwest flank of Mount St. Helens and canyon of South Fork Toutle River. Skamania County, Washington. 1979. Aerial view of Mount St. Helens summit region. Goat Rocks dome near center. Skamania County, Washington. 1979. Aerial view of dome and crater floor from south, with scattered fumaroles. Mount St. Helens, Skamania County, Washington. 1981. Aerial view of dome and snow-covered crater, looking south. Mount St. Helens, Skamania County, Washington. 1981. Shoestring Glacier, southeast side of Mount St. Helens. Skamania County, Washington. 1970. Damaged gauges on Caterpillar tractor located near Meta Lake, 13 km northeast of Mount St. Helens. Skamania County, Washington. 1980. Aerial view southeast of approximately upper half of Mount St. Helens. Skamania County, Washington. 1980. Aerial view of east side of Mount Saint Helens and limit of blast area. Skamania County, Washington. 1980. Oblique aerial view of other-than-the-north flank of Mount St. Helens. Skamania County, Washington. 1980. Oblique aerial view looking down at dome and adjacent areas of crater floor. Mount St. Helens, Skamania County, Washington. 1980. Oblique aerial view at rim edge - beheaded Shoestring Glacier. Mount St. Helens, Skamania County, Washington. 1980. Aerial view of explosion pit on pumice plain. Mount St. Helens, Skamania County, Washington. 1980. Oblique aerial view of southeast side of Mount St. Helens. Skamania County, Washington. 1980. Near aerial view of summit of Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. Plume on Mount St. Helens. Skamania County, Washington. 1983. These slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. Aerial view northeast across northwest flank of Mount St. Helens and canyon of South Fork Toutle River. Skamania County, Washington. 1979. Aerial view of Mount St. Helens summit region. Goat Rocks dome near center. Skamania County, Washington. 1979. Aerial view of dome and crater floor from south, with scattered fumaroles. Mount St. Helens, Skamania County, Washington. 1981. Aerial view of dome and snow-covered crater, looking south. Mount St. Helens, Skamania County, Washington. 1981. Shoestring Glacier, southeast side of Mount St. Helens. Skamania County, Washington. 1970. Oblique aerial view of other-than-the-north flank of Mount St. Helens. Skamania County, Washington. 1980. Oblique aerial view looking down at dome and adjacent areas of crater floor. Mount St. Helens, Skamania County, Washington. 1980. Oblique aerial view at rim edge - beheaded Shoestring Glacier. Mount St. Helens, Skamania County, Washington. 1980. Aerial view of explosion pit on pumice plain. Mount St. Helens, Skamania County, Washington. 1980. Oblique aerial view of southeast side of Mount St. Helens. Skamania County, Washington. 1980. Near aerial view of summit of Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. Degassing, Spirit Lake. Mount St. Helens, Skamania County, Washington. 1980. Damaged gauges on Caterpillar tractor located near Meta Lake, 13 km northeast of Mount St. Helens. Skamania County, Washington. 1980. Aerial view southeast of approximately upper half of Mount St. Helens. Skamania County, Washington. 1980. Aerial view of east side of Mount Saint Helens and limit of blast area. Skamania County, Washington. 1980.