Washington … Fortunately, he says, most Pacific Rim quakes have not produced tsunamis that have had a major impact on Washington. Scientists have found that at least seven earthquakes around magnitude 9 have occurred over the last 3,500 years, an average of one every 500 years. The CSZ has been responsible for 19 earthquakes of magnitude 9+ in the last … A tsunami forms, reaching about 33 feet high along the Washington coast, travels across the Pacific Ocean and hits the east coast of Japan. Today marks the 20th anniversary of the Washington’s last big earthquake, and there’s no forgetting it. The Washington State Department of Natural Resources (DNR) released a series of tsunami simulations last week that show the impact of a Cascadia Subduction Zone earthquake on … Tsunami generated by a ~9.2 magnitude Cascadia earthquake in 1700 along a ~600 mile long fault from Vancouver Island, British Columbia to northern California. Now a new study suggests that quake might have rocked an even bigger area than anyone thought. 3 of 8 4 of 8. Washington’s outer and inner coasts are highly vulnerable to tsunamis thanks to the presence of numerous crustal faults and the Cascadia Subduction Zone (CSZ) offshore. The last magnitude 9 Cascadia subduction zone earthquake struck in January, 1700 and produced a tsunami that left … MORE | Washington DNR Tsunami Resource Page. A tsunami is a series of waves, not just a single wave. The tsunami initiated a nautical accident in which were lost two crew members and tons of rice. Maps from the Washington Geological Survey's modeling of how a tsunami following a 9.0 earthquake would affect the coast of Washington. In the open ocean, tsunami waves can travel at speeds up to 500 miles an hour, as fast as a … Tsunami: NGDC: 1872-12-15: North Cascades: VIII: 6.5–7.0: scientific interest: 1700-01-26: Cascadia subduction zone: 8.7–9.2 M w Tsunami: Note: The inclusion criteria for adding events are based on WikiProject Earthquakes' notability guideline that was developed for stand-alone articles. It’s been 320 years since the last magnitude 9.0 earthquake caused a tsunami along the Washington coast. By … The principles described also apply to lists. Washington is earthquake and tsunami country! The Cascadia subduction zone is still active and will generate more major earthquakes in the future. Japanese sources document this earthquake, which is the earliest documented historical event in Western Washington. Washington state’s Department of Natural Resources recently released a simulation detailing what would happen if a tsunami hit the state. The last time the Seattle fault ripped, it jolted shorelines and unleashed a tsunami.