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.
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 Map Set
https://doi.org/10.3133/pp1250
Other Maps In Set:
Map Data
Map ID 616 Hazard Process(es) Tephra fall Hazard Zone Presentation Single hazard: A single hazard process is represented on a main map panel Temporal Scale Very short-term crisis map (hours to days)
Spatial Scale Regional Publication Format Figure in a hazard assessment or mitigation plan Zonation Method(s) Scenario modeling Zonation Model(s) Unknown tephra model (Unknown reference) Scenario(s) Considered Current conditions Hazard Zone Label(s) Scenario name Probability Definition(s) No probability definition was discernable from the map Purpose Crisis 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. Audience Multiple 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) Diemsionality Planimetric (2D or map) view Color Scheme Symbols and/or lines only