A University of Washington research project, to be presented Oct. 24 at the Geological Society of America’s annual meeting in Seattle, simulates 50 different ways that a magnitude-9.0 earthquake on the Cascadia subduction zone could unfold. Seattle’s Office of Emergency Management has released an interactive map showing how badly various neighborhoods might be affected by a quake and any ensuing ground liquefaction or tsunami. The following animations are based on an earthquake scenario generate by the finite difference model MOST. This story map was created with the Story Map Series application in ArcGIS Online. New maps released by the state show a tsunami generated by a magnitude 9 earthquake on the Cascadia Subduction Zone would take 1.5 hours to reach the Anacortes and Bellingham areas. The tide stage and tidal currents can amplify or reduce the impact of a tsunami … Tsunami deposits have been found in four locations in Puget Sound, including Seattle. If a 9.0 earthquake were to strike the Washington coast residents would have 15 to 20 minutes to prepare for a 60-foot-tall wave to hit Long Beach, Westport, Ocean Shores and other coastal communities It is more likely (but not certain) that the next Seattle Fault earthquake and tsunami will be smaller. The preliminary results from modeling a tsunami generated by an M9.0 megathrust earthquake predict the main impacts to be current speeds of 3 to 5 knots in Elliott Bay and 15 inches of inundation near the Duwamish river. Seattle Fault According to the recent seismological studies, the Seattle Fault is believed to be a zone of thrust or reverse faults that strikes through Seattle in the densely populated Puget Lowland of western Washington (Johnson et al., 1999). Seattle's Leading Local News ... New tsunami evacuation maps released for 4 Washington ... has published new maps to help residents in four coastal areas safely evacuate in the event of a tsunami. This new view is particularly important for Seattle, which sits atop a … Post drill, we talked about what might happen next, and how if it is the Seattle Fault earthquake, which runs through Elliott Bay, it will produce a tsunami or more accurately a seiche. Wave heights along the beaches will vary depending on the bathymetry of the coastline however the amount and level of … A distant tsunami , also called a distant-source tsunami, a far-field tsunami, or a tele-tsunami, is from a faraway source, sometimes on the other …

Examples of local tsunami threats in Washington are tsunamis generated from earthquake events on the Cascadia subduction zone or local crustal faults such as the Seattle or Tacoma faults. This model does not include the influence of tides. Submitted by Grays Harbor County Emergency Management W ashington State DNR released new Tsunami Inundation Hazard Maps for Southwest Washington on Monday, March 26 th, 2018.These maps are a bit different than previous tsunami inundation mapping. It is not known if they are the result of one event or several, but the most likely source was an estimated magnitude 7.3 earthquake on the Inundation Mapping - Washington Animations. Previous inundation mapping was based upon the last Cascadia Subduction Zone earthquake from 1700 AD.

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