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Tsunami and liquefaction zones Port Angeles, Sequim and Port Townsend will all be affected by tsunami waves. These areas will have approximately one hour after the earthquake to evacuate. Port Angeles and Sequim will also be affected by the liquefaction. This is due to the fact that much of Port Angeles was canyons that were filled in by sluicing dirt. In the case of Sequim, it is part of an alluvial plain for the rivers and creeks. An alluvial plain is a largely flat landform created by the deposition of sediment over a long period of time by one or more rivers coming from highland regions, from which alluvial soil forms. Port Townsend has liquefaction only in the low-lying tsunami area. The red dots shown on these maps of the Port Angeles and Sequim areas are the bridges expected to be lost in the quake.

Damage Summary: East Clallam

Source: Washington Department of Natural Resources

Red dots = destroyed/damaged bridges

Peninsula Daily News/Sequim Gazette

Source: Washington Department of Natural Resources

YELLOW indicates that you are within the tsunami hazard zone. GREEN indicates that you are outside the tsunami hazard zone

PENINSULA EMERGENCY PREPAREDNESS GUIDE

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Source: Washington Department of Natural Resources

FEBRUARY 2018

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Special Sections - Peninsula Emergency Preparedness Guide 2018  

i20180216114924907.pdf

Special Sections - Peninsula Emergency Preparedness Guide 2018  

i20180216114924907.pdf