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Computer plot of predicted movement of ash at seven different altitudes, erupted at 1100 PDT on May 18, 1980.

St. Helens, United States, 1981

Figure 453 in: Miller, C.D., Mullineaux, D.R. & Crandell, D.R. (1981). Hazards assessments at Mount St. Helens. In: Lipman, P. W. & Mullineaux, D. R. (Eds.) The 1980 eruptions of Mount St. Helens, Washington. U.S. Geological Survey, Professional Paper 1250, p. 789-802. https://doi.org/10.3133/pp1250



This map was produced by an official agency, but is NOT the most recent, most complete, or main operational map. For the current operational hazard map, please consult the proper institutional authorities.


Click on image for full-size map. If link seems broken, try the archived version.

Map Set

Miller, C.D., Mullineaux, D.R. & Crandell, D.R. (1981). Hazards assessments at Mount St. Helens. In: Lipman, P. W. & Mullineaux, D. R. (Eds.) The 1980 eruptions of Mount St. Helens, Washington. U.S. Geological Survey, Professional Paper 1250, p. 789-802. https://doi.org/10.3133/pp1250
https://doi.org/10.3133/pp1250

Other Maps In Set:

Map Data

Map ID616
Hazard Process(es)Tephra fall
Hazard Zone PresentationSingle hazard: A single hazard process is represented on a main map panel
Temporal ScaleVery short-term crisis map (hours to days)
Spatial ScaleRegional
Publication FormatFigure in a hazard assessment or mitigation plan
Zonation Method(s)Scenario modeling
Zonation Model(s)Unknown tephra model (Unknown reference)
Scenario(s) ConsideredCurrent conditions
Hazard Zone Label(s)Scenario name
Probability Definition(s)No probability definition was discernable from the map
PurposeCrisis management and response: Intended to be used for managing, responding to, and taking action during an eruption; often includes evacuation routes, access restrictions, actions to take, etc.
AudienceMultiple audiences (usually the public, civil authorities, and land-use planners)
Language(s)English
Basemap(s)Administrative boundaries (e.g. county, park, intl.)
Basemap overlay(s)
DiemsionalityPlanimetric (2D or map) view
Color SchemeSymbols and/or lines only
Volcanic Alert Level System
Go to Global Volcanism Program page for St. Helens →