Description: This group of data contains site locations and point based information pertinent to the maps produced for tsunami evacuation. This includes the locations of assembly areas, shelters, AHAB sirens, and critical facilities and lines for evacuation routes. These evacuation routes were developed in coordination with local emergency managers to assist coastal residents and visitors in finding safer locations in case of an earthquake and tsunami and were utilized in the creation of evacuation map products to help facilitate the communication of tsunami hazard and evacuation information in an online map portal. The published map products indicate direction of travel in select locations, see the evacuation map publications for details.
Description: This layer provides the boundaries of and links to tsunami walk time maps. These products cover selected populated coastal areas and show the amount of time it would take for somebody to walk to safety from the inundation zone.
Description: This layer provides the boundaries of and links to tsunami evacuation brochures. These products cover selected populated coastal areas. It is important to note that the full extent of tsunami inundation is not always captured in one single evacuation brochure.
Description: AHAB Tsunami Sirens - Tsunami sirens, or All-Hazard Alert Broadcast (AHAB) sirens, generate a loud wailing noise that can be heard from long distances outside to provide warning of tsunamis and transmit messages to coastal areas. Sirens are tested monthly with a chime tone.
Description: Assembly Areas and Shelters - are designated locations where those who have evacuated from the tsunami inundation zone can gather and find shelter. Vertical evacuation structures are designated places of refuge during the tsunami event. Assembly areas and shelters are designated by local emergency managers for places to gather after a tsunami event. Some assembly areas are located within the tsunami hazard zone, and should only be used after the tsunami hazard has passed. Please refer to evacuation maps for additional details.
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Description: Reference Points - Many tsunami evacuation brochures show local landmarks such as fire stations, police stations, clinics, and hospitals on evacuation maps. These landmarks are only shown for points of reference and are not evacuation assembly areas. Many of these landmarks may actually be in tsunami inundation zones.
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Description: Tsunami evacuation routes were developed in coordination with local emergency managers to guide people to higher ground. In some areas there may be more than one way to reach safety. These routes are typically marked with multiple signs showing additional options for evacuation. You will need to know the evacuation routes for your area ahead of time. If you feel an earthquake, evacuation on foot is highly recommended, as roads will likely be impassable by vehicle.
Description: The mapped hazard areas are a compilation of the maximum modeled tsunami inundation(flooding), gathered from multiple tsunami hazard publications, representing multiple earthquake scenarios. Depending on location, this may be either an offshore earthquake from the Cascadia subduction zone or local crustal faults within Puget Sound.To see the specific modeled effects from a single earthquake scenario, use the Tsunami Scenario Catalog. Areas Not Modeled for Tsunami Hazard - No tsunami modeling has been done for these areas, but a tsunami hazard may still exist along all Washington State shorelines, and even within inland bodies of water.
Description: The Hazard Map Publications dataset provides the boundaries of the modeled hazard study areas with links to download tsunami hazard map publications and associated data for inundation and current speed. Click on the hazard map outlines and download the publications for more specific information about each map.
Description: The mapped hazard areas are a compilation of the maximum modeled tsunami inundation (flooding), gathered from multiple tsunami hazard publications and represents multiple earthquake scenarios. Depending on location, this may be either an offshore earthquake from the Cascadia subduction zone or local crustal faults within Puget Sound.
Description: Areas Not Modeled for Tsunami Hazard - No tsunami modeling has been done for these areas, but a tsunami hazard may still exist along all Washington State shorelines, and even within inland bodies of water.
Description: This catalog contains tsunami inundation models from several deterministic earthquake scenarios. The location and magnitude of the source earthquake determines the extent and size of the modeled tsunami. The tsunami scenario models are generated from several different scenario earthquakes along the Cascadia subduction zone and other local crustal faults. Cascadia M9.0 Estimated Tsunami Arrival Times: These points provide information about how long it will take for the first tsunami wave from a Cascadia M9.0 earthquake scenario to reach a given location, as well as the amplitude of that wave. Cascadia M9.0 Hazard Areas: Modeled after a simulated 9.0 magnitude earthquake along the Cascadia subduction zone using the L1 splay fault model. Cascadia 1700 Hazard Areas: Modeled after a simulated 9.1 magnitude earthquake, based on the ~A.D. 1700 event along the Cascadia subduction zone. Cascadia 1700 With Asperity Hazard Areas: Modeled after a simulated 9.1 magnitude earthquake, based on the ~A.D. 1700 event along the Cascadia subduction zone. This scenario adds an extra 20 ft of uplift as compared to scenario 1A. Seattle Fault M7.5 Estimated Tsunami Arrival Times: These points provide information about how long it will take for the first tsunami wave from a Seattle Fault M7.5 earthquake scenario to reach a given location, as well as the amplitude of that wave. Seattle Fault M7.5 Hazard Areas: Modeled after a simulated ~7.5 magnitude earthquake on the Seattle Fault, similar to that of the 923 CE event. Tacoma Fault M7.3 Hazard Areas: Modeled after a simulated ~7.3 magnitude earthquake on the Tacoma Fault. Tacoma Fault-Rosedale M7.3 Hazard Areas: Modeled after a simulated ~7.3 magnitude earthquake on the Tacoma Fault using the Rosedale monocline as the dominant slip face.
Name: Cascadia M9.0 Estimated Tsunami Arrival Times
Display Field: inundating_wave_arrival_time
Type: Feature Layer
Geometry Type: esriGeometryPoint
Description: This feature class contains wave amplitude and first inundating wave arrival time information from tsunami inundation models from a deterministic earthquake scenario. This scenario is for the Cascadia subduction zone M 9.0 scenario: Modeled after a simulated 9.0 magnitude earthquake along the Cascadia subduction zone using the L1 splay fault model. The Extended-L1 model was further extended up to the northwest off of Vancouver Island.
Description: This feature class contains tsunami inundation models from a deterministic earthquake scenario. The location and magnitude of the source earthquake determines the extent and size of the modeled tsunami. This scenario is for the Cascadia subduction zone M 9.0 scenario: Modeled after a simulated 9.0 magnitude earthquake along the Cascadia subduction zone using the L1 splay fault model. The Extended-L1 model was further extended up to the northwest off of Vancouver Island.
Description: This feature class contains tsunami inundation models from a deterministic earthquake scenario. The location and magnitude of the source earthquake determines the extent and size of the modeled tsunami. This scenario is for the Cascadia Subduction Zone scenario 1A: Modeled after a simulated 9.1 magnitude earthquake, based on the ~A.D. 1700 event along the Cascadia subduction zone.
Description: This feature class contains tsunami inundation models from a deterministic earthquake scenario. The location and magnitude of the source earthquake determines the extent and size of the modeled tsunami. This scenario is for the Cascadia Subduction Zone scenario 1A: Modeled after a simulated 9.1 magnitude earthquake, based on the ~A.D. 1700 event along the Cascadia subduction zone. Simulation adds an extra 20 feet of uplift as compared to scenario 1A.
Name: Seattle Fault M7.5 Estimated Tsunami Arrival Times
Display Field: inundating_wave_arrival_time
Type: Feature Layer
Geometry Type: esriGeometryPoint
Description: This feature class contains wave amplitude and first inundating wave arrival time information from tsunami inundation models from a deterministic earthquake scenario. This scenario is modeled after a simulated ~7.5 magnitude earthquake on the Seattle Fault, similar to that of the 923 year B.P. event.
Description: This feature class contains tsunami inundation models from a deterministic earthquake scenario. The location and magnitude of the source earthquake determines the extent and size of the modeled tsunami. This scenario is modeled after a simulated ~7.5 magnitude earthquake on the Seattle Fault, similar to that of the 923 year B.P. event.
Description: This feature class contains tsunami inundation models from a deterministic earthquake scenario. The location and magnitude of the source earthquake determines the extent and size of the modeled tsunami. This scenario is for the Tacoma Fault earthquake scenario: Modeled after a simulated ~ 7.3 magnitude earthquake on the Tacoma Fault.
Description: This feature class contains tsunami inundation models from a deterministic earthquake scenario. The location and magnitude of the source earthquake determines the extent and size of the modeled tsunami. This scenario is for the Tacoma Fault- Rosedale monocline earthquake scenario: Modeled after a simulated ~ 7.3 magnitude earthquake on the Tacoma Fault using the Rosedale monocline as the dominant slip face.