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Highlights !!!
"HIGHLIGHTS" Archive
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Q: How big is the new lava dome ???.
The volume of the new lava dome as measured July 5, 2007, was 122 million cubic yards (volume is equivalent to 150 to 200 large sports stadiums) and was growing at an average rate of 0.14 cubic yards per second (nearly equivalent to filling 4 Olympic-sized swimming pools every day.
[Information release, February 21, 2008]
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News
Eruption
Photo Gallery
Features and Information
New Online
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MORE NEW images online from February 26th.
[February 29]
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NEW images online from February 26th.
[February 27]
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Change in Mount St. Helens Alert Level and Aviation Color Code.
[February 21]
FAQs, Lava Dome statistics, seismicity, gas emissions, deformation (GPS), and September 2004 to July 2007 DEM showing dome growth
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NEW images put online from Brutus Camera for January and February, 2008.
[February 21]
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NEW images put online from January 23rd.
[February 20]
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January 23rd image online from the Sugar Bowl Camera.
[January 23]
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NEW images put online from January 16.
[January 23]
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NEW images -- December and January images put online of the view of the growing dome and the advancing glacier, from the Guacamole Remote Camera.
[January 22]
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NEW page, a collection of images showing Yellow Rock Seismic Station, now abandoned and soon to be crumbled by the advancing west arm of the Crater Glacier.
[December 14]
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A couple of new images online from December 8.
[December 11]
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NEW November images online of the view of the growing dome and the advancing glacier, from the Guacamole Remote Camera.
[December 10]
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ARCHIVES
Background Information
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Alert Levels for the Cascade Range Volcanoes - Information
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Aviation Color Codes
-- Alaska Volcano Observatory's "Level-of-Concern" Color Code, USGS Fact Sheet FS030-97
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Glossary of Volcano Terminology
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Hazards Map - Mount St. Helens Hazards Zones
-- [regional, large-scale, JPG Format, 467K, 1084x715pixels]
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Hazards Report - Volcanic-Hazard Zonation for Mount St. Helens, Washington, 1995, USGS Open-File Report 95-497
-- Current Hazards Report
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LIDAR
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Location Map - Cascade Range Volcanoes
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Location Map - Mount St. Helens
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Media Advisory - Interior Secretary Gale Norton visit, October 2, 2004
-- [PDF Format]
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Mount St. Helens -- From the 1980 Eruption to 2000, USGS Fact Sheet FS036-00
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Mount St. Helens Erupts Again --
Activity from September 2004 through March 2005, USGS Fact Sheet FS2005-3036
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Past Updates, Advisories, and Information Statements for the Cascade Range
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Past Updates, Advisories, Information Statements, and Monthly Seismic Graphs for Mount St. Helens
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Seismic Signal Examples -- including a small gas and ash explosion
-- [PDF Format, 915K]
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U.S. Geological Survey’s Alert Notification System for Volcanic Activity
-- Gardner and Guffanti, 2006, USGS Fact Sheet 2006-3139
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Volcanic Ash Website -- "What it can do and how to prevent damage"
-- Link
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Volcanic Explosivity Index (VEI) information
-- [PDF Format, 1.4M]
Other Menus of Interest
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