USGS/Cascades Volcano Observatory, Vancouver, Washington

Mount St. Helens, Washington

Latest Update

Current Activity
- Link to: Current Seismicity -- link courtesy University of Washington Geophysics Program
- Current Update -- Cascade Range, including Mount St. Helens
- Current Eruption - Menu
- Current Eruption - Photo Archives
- Current Activity Information - Updates
- Current Activity Information - Archives
Hydrologic "Real-Time" Monitoring Information
- "Real-Time" Hydrologic Monitoring -- Water Levels only, streamflow, battery voltage, 1-Day, 3-Day, 7-Day, and 30-Day plots ...
VolcanoCam
- VolcanoCam -- "Live" view from Johnston Ridge Observatory. -- Link courtesy U.S. Forest Service, Gifford Pinchot National Forest, Mount St. Helens National Volcanic Monument Please note - the VolcanoCam is not ours, it belongs to the National Monument. We are simply providing a link to their site. If you have any questions about the VolcanoCam please contact them.
- VolcanoCam FAQ's
Background and Information
- CASCADE RANGE SUMMARY: Mount St. Helens
- DESCRIPTION: Mount St. Helens Volcano -- Geographic Setting, Geologic and Eruptive History -- includes Baron St. Helens ... Early Documentation ... Eruptive History ... Historical Information ... Hydrologic Setting ... Lava Dome ... May 18, 1980 ... Monitoring ... Northwest Legends ... Mount St. Helens National Volcanic Monument ...
Current Hazards Report
- CURRENT 1995 HAZARDS REPORT: Volcanic-Hazard Zonation for Mount St. Helens, Washington
Eruption Menus
- May 18, 1980 Eruption - Menu
- Current Eruption - Menu
Special Items of Interest
- Mount St. Helens - Points of Interest -- "Armchair Tour"
- Visit A Volcano - Mount St. Helens National Volcanic Monument -- points of interest, maps, links, etc.
- Volcanoes of Lewis and Clark -- includes sightings of Mount St. Helens
- Eruptions of Mount St. Helens: Past, Present, and Future -- Tilling, et.al., 1990
- The 1980 Eruptions of Mount St. Helens, Washington -- Lipman and Mullineaux, (eds.), 1981, USGS Professional Paper 1250, 844p.
- Mount St. Helens -- From the 1980 Eruption to 2000 -- Brantley and Myers, 2000
- Mount St. Helens Erupts Again -- Activity from September 2004 through March 2005 -- Major, et.al., 2005
Maps, Graphics, and Images
- Maps and Graphics - Mount St. Helens
- CVO Photo Archives - Mount St. Helens Eruption Images, 2004 to Current
- CVO Photo Archives - Mount St. Helens 1980-2004 Images
- CVO Photo Archives - Mount St. Helens 1980-2004 Images - Listed by Topics
- CVO Photo Archives - Mount St. Helens General Slide Set -- 50 Images of General Interest, 1980-1990
- CVO Photo Archives - Annotated NASA Images -- NASA Photography with annotation by CVO
Publications and Reports
- Publications and Reports - Mount St. Helens
- Publications and Reports - CVO List
Useful Links
- Link to: Mount St. Helens National Volcanic Monument
- Useful Links - Washington State -- includes Mount St. Helens
Items of Interest
- Acoustic Flow Monitors (AFM) - CVO Project Menu -- Detecting Debris Flows Using Ground Vibrations
- Active and Potentially Active Volcanoes in Washington -- Excerpt from: Wright and Pierson, 1992, USGS Circular 1073, includes Mount St. Helens
- Advisories and Emergency Response - Menu
- Airborne Thermal Imaging
- Alert Levels for the Cascade Range Volcanoes - Information
- Archives -- Mount St. Helens' Current Activity Archives -- Daily Udates, Monthly Seismic Summaries, Volcanic Activity, etc.
- Areal Distribution, Thickness, Mass, Volume, and Grain Size of Air-Fall Ash from the Six Major Eruptions of 1980 -- Sarna-Wojcicki, et.al., 1981, IN: USGS Professional Paper 1250
- Alleyne Fitzherbert - "Baron St. Helens"
- America's Volcanic Past - Mount St. Helens National Volcanic Monument -- volcanic highlights and features
- America's Volcanic Past - Washington State -- volcanic highlights and features, includes Mount St. Helens
- Annotated NASA Images - Mount St. Helens - Menu
- Annotated NASA Image - Mount St. Helens, Washington, September 1994 -- [Image,99K,InlineJPG] -- NASA Photo, courtesy NASA Earth From Space; Modified with text by USGS/CVO
- Ape Cave Lava Tube - Menu
- ArcInfo Coverage - Washington State -- 1995 Washington State On-Line Spacial Data Sets, includes Mount St. Helens
- Ash and Tephra - Menu
- Ash Distribution (May 18, 1980) across the United States - map -- [Map,20K,InlineGIF] -- Modified from: Tilling, Topinka, and Swanson, 1990
- Ash Eruption and Fallout -- Excerpt from: Tilling, et.al., 1990
- Ash Plume - Vertical growth and downwind progress of the ash plume from the May 18 eruption -- Excerpt from: Sarna-Wojcicki, et.al., 1981
- Ash Plume Path - Map -- [Map,22K,InlineGIF] -- Modified from: Sarna-Wojcicki, et.al., 1981, IN: USGS Professional Paper 1250
- August 7, 1980 Eruption - Observations of the Eruptions of July 22 and August 7, 1980, at Mount St. Helens, Washington -- Hoblitt, 1986
- Aviation Color Codes -- Alaska Volcano Observatory's "Level-of-Concern" Color Code, USGS Fact Sheet FS030-97
- Baron St. Helens - Alleyne Fitzherbert
- Bean Creek - Menu
- Before and After May 18, 1980 - Photo Archives
- Bulge (1980) - Description
- Bulging of the north flank before the May 18 eruption -- geodetic data -- Lipman, Moore, and Swanson
- Camera - VolcanoCam -- "Live" view from Johnston Ridge Observatory. -- Link courtesy U.S. Forest Service, Gifford Pinchot National Forest, Mount St. Helens National Volcanic Monument
- Cascades Eruptions During the Past 4000 Years - Graphic -- [Graphic,70K,InlineGIF] -- includes Washington State Volcanoes such as Mount St. Helens
- Cascade Range - Current Activity Updates -- includes Mount St. Helens
- Cascade Range - Interactive Table -- interactive table, includes brief volcano summary, links to current publications and research, includes Mount St. Helens
- Cascade Range - Summary - Mount St. Helens
- Cascade Range Volcanoes and Volcanics - Menu -- general information about Cascade Range Volcanoes and Volcanic Activity, including Mount St. Helens
- Castle Lake - Menu
- Castle Lake Wells Project - CVO Project Menu
- Catastrophic First Minute (May 18, 1980) -- Excerpt from: Tilling, Topinka, and Swanson, 1990
- Chronology of the 1980 eruptive activity -- Christiansen and Peterson, 1981, IN: USGS Professional Paper 1250
- Clear Creek - Menu
- Clearwater Creek - Menu
- Climb a Volcano - Mount St. Helens
- Coldwater Lake - Menu
- Coldwater Lake Recreation Area
- Coldwater Ridge - Menu
- Coldwater Ridge Visitor Center
- Columbia River - Menu
- Columbia River Drainage - Description -- includes description of impact of the May 18, 1980 eruption
- Cowlitz River - Menu
- Current Seismicity -- link to daily seismic updates, link courtesy University of Washington Geophysics Program
- Current Updates and Monthly Summaries
- CVO Open House 2005 - Images
- Deadly Volcanic Eruptions --includes 1980 Mount St. Helens
- Debris Avalanche - Description
- Debris Avalanche - Menu
- Debris Avalanche - Rockslide-Debris Avalanche of May 18, 1980, Mount St. Helens Volcano, Washington -- Glicken, 1996, USGS Open-File Report 96-677
- Deformation Project - CVO Project Menu -- general information about the Volcano Deformation Project including the monitoring of Mount St. Helens
- Deposits of pre-1980 pyroclastic flows and lahars from Mount St. Helens Volcano, Washington -- Crandell, D.R., 1987, PP 1444
- Detecting Debris Flows Using Ground Vibrations -- CVO Project Menu -- Acoustic Flow Monitors (AFM)
- Distribution within the United States of May 18, 1980 ash fallout from Mount St. Helens - Map -- [Map,20K,InlineGIF] -- Modified from: Tilling, Topinka, and Swanson, 1990
- Dome - Menu
- Earthquakes and Seismicity - Menu
- Economic Impact of the May 18, 1980, Eruption - Description
- Emissions - Menu
- Eruption Advisories and Emergency Response - Menu
- Eruption Summary - May 18, 1980 to September 2004
- Eruptions of Mount St. Helens: Past, Present, and Future -- Tilling, et.al., 1990 -- good publication covering what happened in May 1980, and the aftermath
- Eruptions of Mount St. Helens, Washington - Professional Paper 1250 -- Lipman and Mullineaux, (eds.), 1981, USGS Professional Paper 1250, 844p.
- Eruptive History - Menu
- Eruptive History -- Excerpt from: Doukas, 1990, USGS Bulletin 1859
- Eruptive History -- Mullineaux and Crandell, 1981, "The Eruptive History of Mount St. Helens", IN: USGS Professional Paper 1250
- Eruptive History -- Excerpt from: Mullineaux and Crandell, 1981, IN: USGS Professional Paper 1250
- Eruptive History -- Excerpt from: Mullineaux, 1996, USGS Professional Paper 1563
- Eruptive History -- Excerpt from: Swanson, et.al., 1989, Early History and Volcanic Activity from 1980-1988
- Eruptive History -- Excerpt from: Tilling, Topinka, and Swanson, 1990, USGS General Interest Report
- Eruptive History after May 18, 1980 -- (1980-1983) -- Excerpt from: Tilling, et.al., 1990
- Explosive tephra emissions at Mount St. Helens, 1989-1991: The violent escape of magmatic gas following storms? -- Mastin, 1994, IN: GSA Bulletin, v.106
- FLIR - Forward Looking Infrared
- Floods and High Water - Menu
- Future Behavior -- what will be the future of Mount St. Helens ?
- Gas Emissions - Menu
- Generalized North-South Geologic Cross Sections Through Mount St. Helens - Graphic -- [Graphic,20K,InlineGIF] -- Pre-May 18, Bulge, Slide Blocks, 1980 Crater Floor -- Modified from: Doukas, 1990, USGS Bulletin 1859
- Geographic Setting
- Geologic Map of Washington State -- [Map,82K,InlineGIF]
- Gifford Pinchot National Forest -- U.S. Forest Service Links
- Glaciers and Glaciations - Menu
- Goat Rocks Eruptive Period -- Excerpt from Crandell, 1987, PP1444
- Green River - Menu
- Hazards Map - Mount St. Helens Hazards Zones -- [regional, large-scale, JPG Format, 467K, 1084x715pixels]
- Hazards - Menu
- Hazards Report - Volcanic-Hazard Zonation for Mount St. Helens, Washington, 1995, USGS Open-File Report 95-497 -- Current Hazards Report
- Historical Information
- Hydrologic Data Collection Sites surrounding Mount St. Helens -- Current and Historical
- Hydrologic Data Collection Sites surrounding Mount St. Helens - "Real-Time"
- Hydrology - Menu
- Impact and Aftermath of May 18, 1980 -- Excerpt from: Tilling, et.al., 1990
- Johnston Ridge - Menu
- Johnston Ridge Observatory
- Johnston Ridge Visitor Center
- July 22, 1980 Eruption - Observations of the Eruptions of July 22 and August 7, 1980, at Mount St. Helens, Washington -- Hoblitt, 1986
- Kalama River - Menu
- La-wa-la-clough
- Lahars - Menu
- Lake Merwin - Menu
- Lakes North of Mount St. Helens Affected by the May 18, 1980 Eruption - Map -- [Map,32K,InlineGIF] -- Modified from: Dion and Embrey, 1981, USGS Circular 850-C, and Embrey and Dion, 1988, WRI-87-4263
- Lakes and Reservoirs - Menu
- Lateral Blast of May 18, 1980 -- Excerpt from: Tilling, Topinka, and Swanson, 1990
- Lava Dome - Menu
- Lewis River - Menu
- LIDAR (Light Detection and Ranging) - Menu -- includes Mount St. Helens
- Life Returns to Mount St. Helens -- Excerpts courtesy of U. S. Forest Service
- Location Map - Cascade Range Volcanoes
- Location Map - Mount St. Helens
- Loowit (Loo-wit Lat-kla)
- Louwala-Clough
- Map - Ash distribution within the United States of May 18, 1980 ash fallout from Mount St. Helens -- [14K,InlineGIF] -- Modified from: Tilling, Topinka, and Swanson, 1990
- Map - May 18, 1980, Ash Plume Path -- [22K,InlineGIF] -- Modified from: Sarna-Wojcicki, et.al., 1981, IN: USGS Professional Paper 1250
- Map - May 18, 1980, Devastation -- [21K,InlineGIF] -- Modified from: Tilling, Topinka, and Swanson, 1990
- Map - Lakes North of Mount St. Helens Affected by the May 18, 1980 Eruption -- [32K,InlineGIF] -- Modified from: Dion and Embrey, 1981, USGS Circular 850-C, and Embrey and Dion, 1988, WRI-87-4263
- Maps and Graphics - Mount St. Helens
- Maps and Graphics - Washington State
- March 1982 Lahar
- May 18, 1980 Eruption - Menu
- May 18, 1980 Eruption - Summary
- May 18, 1980 Ashfall - Menu
- May 18, 1980 Debris Avalanche - Menu
- May 18, 1980 Lahars - Menu
- May 18, 1980 Eruption - Ash Eruption and Fallout -- Excerpt from: Tilling, et.al., 1990
- May 18, 1980 Eruption - Ash Plume Path - Map -- [Map,22K,InlineGIF] -- Modified from: Sarna-Wojcicki, et.al., 1981
- May 18, 1980 Eruption - Debris Avalanche - Description
- May 18, 1980 Eruption - Description
- May 18, 1980 Eruption - Devastation - Map -- [21K,InlineGIF] -- Modified from: Tilling, Topinka, and Swanson, 1990
- May 18, 1980 Eruption - Eruptive Sequence - "Pictogram" -- ["Pictogram",100K,InlineGIF]
- May 18, 1980 Eruption - Lahar - Description
- May 18, 1980 Eruption - Lateral Blast -- Excerpt from: Tilling, Topinka, and Swanson, 1990
- May 18, 1980 Eruption - Mudflows and Floods -- Excerpt from: Tilling, Topinka, and Swanson, 1990
- May 18, 1980 Eruption - Photo Archives
- May 18, 1980 Eruption - Summary
- Media Advisory - Interior Secretary Gale Norton visit, October 2, 2004 -- [PDF Format]
- Merrill Lake - Menu
- Merwin Lake - Menu
- Meta Lake - Menu
- Mining and Mineral Resources - Menu
- Monitoring Highlights - 2004 to Current
- Monitoring - Menu
- Monitoring Mount St. Helens Debris-Dam Lakes - Description
- Monitoring Mount St. Helens Volcano - An Introduction
- Monthly Activity Summaries
- Mount St. Helens - America's Volcanic Past -- volcanic highlights and features
- Mount St. Helens - Ash and Tephra - Menu
- Mount St. Helens - Before 1980 -- Excerpt from: Foxworthy and Hill, 1982, USGS Professional Paper 1249
- Mount St. Helens - Climb A Volcano -- "Family Fun - Picnic at the Top"
- Mount St. Helens - Debris Avalanche - Menu
- Mount St. Helens - Description -- Geographic Setting, Geologic and Eruptive History
- Mount St. Helens - Eruptive History -- Excerpt from: Mullineaux, 1996, USGS Professional Paper 1563
- Mount St. Helens - Eruptive History -- Early History, Volcanic Activity 1980-1988, Swanson, et.al., 1989
- Mount St. Helens - Eruptive History - Menu -- general information about the eruptive history of Mount St. Helens, including May 18, 1980
- Mount St. Helens - From the 1980 Eruption to 2000 -- Brantley and Myers, 2000, USGS Fact Sheet FS036-00
- Mount St. Helens - Historical Background
- Mount St. Helens - Lahars - Menu
- Mount St. Helens - Pyroclastic Flows - Menu
- Mount St. Helens - Points of Interest -- places to see and how to get there
- Mount St. Helens - Visit A Volcano -- information, maps, driving information, tourism, links, etc.
- Mount St. Helens Erupts Again -- Activity from September 2004 through March 2005 -- Major, et.al., 2005
- Mount St. Helens National Volcanic Monument - Visit A Volcano
- Mount St. Helens Reawakens -- Excerpt from: Wright and Pierson, 1992
- Mount St. Helens Volcanic Activity, 1980-1988 -- Excerpt from: Swanson, et.al., 1989, AGU Field Trip Guidebook T106
- Muddy River - Menu
- Mudflows - Menu
- Mudflows and Floods -- Excerpt from: Tilling, Topinka, and Swanson, 1990
- National Volcanic Monument
- North Flank Bulge - Description
- North Flank Bulge - Bulging of the north flank before the May 18 eruption -- geodetic data -- Lipman, Moore, and Swanson
- North Fork Toutle River - Menu
- Northwest Legends
- Observations of the Eruptions of July 22 and August 7, 1980, at Mount St. Helens, Washington -- Hoblitt, 1986, USGS Professional Paper 1335
- Open House 2005 - Images
- Pacific Northwest Seismograph Network
- Pacific Northwest Seismograph Network - Mount St. Helens Vicinity, 1996 -- [Map,16K,InlineGIF] -- Modified from: University of Washington Geophysics Program, 1997
- Pacific Northwest Seismograph Network - Washington and Oregon -- [Map,40K,InlineGIF] -- includes Mount St. Helens -- Modified from: University of Washington Geophysics Program, 1998
- Past, Present, and Future -- Tilling, et.al., 1990 -- good publication covering what happened in May 1980, and the aftermath
- Past Updates, Advisories, and Information Statements for the Cascade Range
- Past Updates, Advisories, Information Statements, and Monthly Seismic Graphs for Mount St. Helens
- CVO Photo Archives - Annotated NASA Images -- NASA Photography with annotation by CVO
- CVO Photo Archives - Before and After
- CVO Photo Archives - Eruption 2004 to Current - Menu
- CVO Photo Archives - May 18, 1980
- CVO Photo Archives - Mount St. Helens Images
- CVO Photo Archives - Mount St. Helens General Slide Set -- 50 Images of General Interest, 1980-1990
- CVO Photo Archives - "Pictograms" -- includes many from Mount St. Helens
- CVO Photo Archives - Pre-May 18, 1980
- Pine Creek - Menu
- Pine Creek Volcanic Assemblage at Mount St. Helens, Washington -- Crandell and Mullineaux, 1973, USGS Bulletin 1383-A
- Plot of thickness vs. distance from vent for several tephras from Cascade Range volcanoes _Graphic -- including May 18, 1980 -- [Graphic,18K,GIF] -- Modified from: Hoblitt, et.al., 1987, USGS Open-File Report 87-297
- Points of Interest -- "Armchair Tour"
- Post-A.D. 1400 segment of eruptive history of Mount St. Helens - Graphic -- [Graphic,30K,GIF] -- From: Tilling, et.al., 1990
- Post-May 18 seismicity; volcanic and tectonic implications -- Weaver, et.al., 1981, IN: USGS Professional Paper 1250
- Pre-1980 Eruptive History -- Excerpt from: Swanson, et.al., 1989, AGU Field Trip Guidebook T106
- Pre-1980 Eruptive History of Mount St. Helens, Washington -- Clynne, et.al., USGS Fact Sheet FS2005-3036
- Pre-1980 Tephra-Fall Deposits Erupted From Mount St. Helens, Washington -- Mullineaux, 1996, USGS Professional Paper 1563
- Pre-May 18, 1980 - Before 1980 -- Excerpt from: Foxworthy and Hill, 1982
- Pre-May 18, 1980 - Bulge - Description
- Pre-May 18, 1980 - Events Leading Up to the May 18, 1980 Eruption of Mount St. Helens, Washington -- March 15 - May 17, 1980 -- week-by-week account of the buildup to May 18, 1980 -- created for the web by Ed Klimasauskas, May 2000
- Pre-May 18, 1980 - Generalized North-South Geologic Cross Sections Through Mount St. Helens - Graphic -- [Graphic,20K,InlineGIF] -- Modified from: Doukas, 1990, USGS Bulletin 1859
- Pre-May 18, 1980 - Important Seismic Events, March 20 - May 18, 1980 -- Excerpt from: Endo, et.al., 1981
- Pre-May 18, 1980 - Mount St. Helens Eruptive History -- Excerpt from: Swanson, et.al., 1989
- Pre-May 18, 1980 - Mount St. Helens Reawakens -- Excerpt from: Wright and Pierson, 1992
- Pre-May 18, 1980 - North Flank Bulge - Description
- Pre-May 18, 1980 - Photo Archives
- Pre-May 18, 1980 - Reawakening and initial activity -- Excerpt from: Tilling, Topinka, and Swanson, 1990
- Pre-May 18, 1980 - Using Spirit Lake as a Tiltmeter - Description
- Predicting the next eruption -- Excerpt from Crandell and Mullineaux, 1978
- Press Briefings - 2004 Eruption
- Professional Paper 1250: The 1980 Eruptions of Mount St. Helens, Washington -- Lipman and Mullineaux, (eds.), 1981, USGS Professional Paper 1250, 844p.
- Proximal Air-Fall Deposits from the May 18 Eruption -- Stratigraphy and Field Sedimentology -- Waitt and Dzurisin, 1981
- Publications and Reports - Mount St. Helens
- Pyroclastic Flows - Menu
- "Real-Time" Mount St. Helens Hydrologic Monitoring -- 1-Day, 3-Day, 7-Day, and 30-Day plots
- Reawakening and initial activity -- Excerpt from: Tilling, Topinka, and Swanson, 1990
- Regrowth and Recovery - Menu
- Research and Projects - Menu -- includes Mount St. Helens
- River Drainages - Menu
- Rockslide-Debris Avalanche of May 18, 1980, Mount St. Helens Volcano, Washington -- Glicken, 1996, USGS Open-File Report 96-677
- Ryan Lake - Menu
- Schematic Diagram of West-East Geologic Section of gully bank near NE base of Mount St. Helens, south of Windy Ridge - Graphic -- [Schematic,25K,GIF] -- Modified from: Doukas, 1990, USGS Bulletin 1859
- CVO SedLab
- Seismic Signal Examples -- including a small gas and ash explosion -- [PDF Format, 915K]
- Seismic Studies 1980 - 1983 -- Excerpt from: Brantley and Topinka, 1984, Earthquake Information Bulletin, v.16, n.2
- Seismic Monthly Summaries Archives
- Seismicity - Menu
- September 1997 Debris Avalanche/Debris Flow -- information statement, images
- Silver Lake - Menu
- Silver Lake Visitor Center
- Simplified Eruptive History of Mount St. Helens -- Modified from: Swanson, et.al., 1989, AGU Field Trip Guidebook T106, Original Simplified from: Crandell, 1987
- Slide Set - "Mount St. Helens General Slide Set" -- 50 Images of General Interest
- Small Explosions Interrupt 3-year Quiescence at Mount St. Helens, Washington -- (1989-1991) -- From: Myers, 1992, Earthquakes and Volcanoes, v.23
- Snow and Ice - Menu
- South Fork Toutle River - Menu
- Smith Creek - Menu
- Spirit Lake - Description -- includes May 18, 1980
- Spirit Lake - Menu
- Spirit Lake - Surface-water temperatures of Spirit Lake before (1974) and after (1980) the May 18, 1980 eruption of Mount St. Helens - Graphic -- [Graphic,18K,GIF] -- Modified from: Dion and Embrey, 1981, USGS Circular 850-G
- Spirit Lake - Using Spirit Lake as a Tiltmeter - Description
- St. Helens (Baron St. Helens - Alleyne Fitzherbert)
- St. Helens Lake - Menu
- Stratigraphic section in Harry Gardner Park, showing May 18 deposits - Graphic -- Schematic [13K,GIF] -- L, lithic-rich layer; P, pumice-rich layer -- Modified from: Doukas, 1990
- SUMMARY: May 18, 1980 Eruption
- SUMMARY: Eruptions Since 1980
- Summary - Events Leading Up to the May 18, 1980 Eruption of Mount St. Helens, Washington -- March 15 - May 17, 1980 -- week-by-week account of the buildup to May 18, 1980 -- created for the web by Ed Klimasauskas, May 2000
- Summary - Important Seismic Events, March 20 - May 18, 1980 -- Excerpt from: Endo, et.al., 1981
- Summary - May 18, 1980 Eruption of Mount St. Helens
- Summary - 1980 - Chronology of the 1980 eruptive activity -- Christiansen and Peterson, 1981
- Summary - Temperature Studies of 1980 Deposits -- Banks and Hoblitt, 1981
- Surface-water temperatures of Spirit Lake before (1974) and after (1980) the May 18, 1980 eruption of Mount St. Helens - Graphic -- [Graphic,18K,GIF] -- Modified from: Dion and Embrey, 1981
- Swift Creek - Menu
- Swift Reservoir - Menu
- Temperature Studies of 1980 Deposits -- Banks and Hoblitt, 1981
- The 1980 Eruptions of Mount St. Helens, Washington -- Lipman and Mullineaux, (eds.), 1981, USGS Professional Paper 1250, 844p.
- Toutle River - Menu
- 20th Century Volcanic Eruptions and Their Impact -- includes Mount St. Helens
- Upper Pleistocene Pyroclastic-Flow Deposits and Lahars South of Mount St. Helens Volcano, Washington -- Hyde, 1975, USGS Bulletin 1383-B
- Using Spirit Lake as a Tiltmeter - Description
- Vertical growth and downwind progress of the ash plume from the May 18 eruption -- Excerpt from: Sarna-Wojcicki, et.al., 1981
- Visit a Volcano - Mount St. Helens National Volcanic Monument
- Volcanic Activity 1980-1988 -- From: Swanson, et.al., 1989, AGU Field Trip Guidebook T106
- Volcanic Emissions and Global Change Project - CVO Project Menu
- Volcanic Explosivity Index (VEI) information -- [PDF Format, 1.4M]
- Volcanic Hazards with Regard to Siting Nuclear-Power Plants in the Pacific Northwest -- Section on Mount St. Helens Eruptive History -- From: Hoblitt, et.al., 1987, USGS Open File Report 87-297
- Volcanic Heights in the Western United States -- includes Mount St. Helens
- Volcanic Temperatures -- includes Mount St. Helens May 18, 1980
- Volcano-Warning Scheme for the Cascade Range Volcanoes
- VolcanoCam -- "Live" view from Johnston Ridge Observatory. -- Link courtesy U.S. Forest Service, Gifford Pinchot National Forest, Mount St. Helens National Volcanic Monument
- VolcanoCam FAQ's
- Volcano Names -- includes Mount St. Helens
- Volcanoes of Lewis and Clark -- includes sightings of Mount St. Helens
- Washington State Volcanoes and Volcanics - Menu -- general information about Washington State volcanoes, including Mount St. Helens
- What To Do if a Volcano Erupts -- information from the Red Cross and FEMA, in volcanic eruptions, ashfall, lahars, floods, includes links
- Windy Ridge - Menu
- Yale Lake - Menu

CVO Educational Outreach

CVO Educational Outreach Menu
-- CVO Menu -- Educational Ideas, Information, Teacher's Aids, "Fun Stuff", Videos and Posters, USGS Educational Links, etc.
Living With Volcanoes
-- Facts and Information; Questions and Answers; Historical, Cultural, and the Economic Sides of Volcanoes; Tourism and Recreation Information, "Real-Time" World-Wide Volcano-Cams; and Information About "Dantes Peak"

Other Menus of Interest

Cascade Range Volcanoes and Volcanics - Menu -- CVO Menu
Washington State Volcanoes and Volcanics - Menu -- CVO Menu

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05/22/06, Lyn Topinka