Preliminary probabilistic tephra-hazard map for Pacific Northwest

Cascades Range (regional, including Canada), Canada, United States, 2011

Figure 2 in: Hoblitt, R.P., & Scott, W.E. (2011). Estimate of tephra accumulation probabilities for the U.S. Department of Energy's Hanford Site, Washington. U.S. Geological Survey, Open-File Report 2011-1064, 15 p. https://doi.org/10.3133/ofr20111064

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

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Map Data

Map ID	1445
Hazard Process(es)	Tephra fall
Hazard Zone Presentation	Single hazard: A single hazard process is represented on a main map panel
Temporal Scale	Background, or long-term, map
Spatial Scale	Regional
Publication Format	Figure in a hazard assessment or mitigation plan
Zonation Method(s)	Scenario modeling
Zonation Model(s)	Unnamed tephra model [Hoblitt et al. (1987); Hoblitt & Scott (2011)] (Hoblitt et al. 1987; Hoblitt & Scott 2011)
Scenario(s) Considered	Analog volcano(es)
Hazard Zone Label(s)	Numeric probability
Probability Definition(s)	Annual numeric probability
Purpose	Multiple: intended for multiple purposes including general hazard awareness, planning, and crisis management
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	Rainbow
Volcanic Alert Level System