An eighty-mile coastal strip from Seattle to Chehalis was severely damaged. Last Updated Dec 18, 2019 at 6:03 am PDT (iStock Photo) Summary. Its epicenter was close to the coast between Olympia and Tacoma and it was felt strongly in Washington, Oregon, Idaho, and British Columbia. Video Shows Tsunami Wave In Puget Sound - Seattle, WA - State geologists have created a simulation showing what a tsunami produced by a magnitude 9.0 quake would mean for Puget Sound.
Leave a Comment / Natural / By devastating. Do not exit buildings until the shaking stops. Stay away from windows and items that could fall from overhead. by The Canadian Press. There’s an earthquake in the Puget Sound region from 1939 that perhaps a few can still recall, or maybe remember their parents or grandparents talking about. Water surged from Puget Sound sometime between 1000 and 1100 years ago, overrunning tidal marshes and mantling them with centimeters of sand. The Seattle Fault cuts across Puget Sound, crossing the southern tip of Bainbridge Island and under Elliott Bay. A magnitude 6.8 earthquake struck southern Puget Sound on February 28, 2001 and caused an estimated $0.7 to $1.4 billion in damages to buildings and roadways in the region (Williams et al., 2001). It … General background Earthquake sources and hazard. The Puget Sound region (Puget Lowland) of western Washington contains the bulk of the population and economic assets of the state, and carries seven percent of the international trade of the United States. These findings show that a tsunami was generated in Puget Sound, and they tend to confirm that a large shallow earthquake occurred in the Seattle area about 1000 years ago. Lesser Puget Sound earthquakes with shallow epicenters, caused by the fracturing of stressed oceanic rocks as they are subducted, still cause great damage.
Puget Sound, Washington has had: (M1.5 or greater) 0 earthquakes in the past 24 hours 4 earthquakes in the past 7 days; 7 earthquakes in the past 30 days A magnitude 6.8 earthquake struck southern Puget Sound on February 28, 2001 and caused an estimated $0.7 to $1.4 billion in damages to buildings and roadways in the region (Williams et al., 2001). To the south, the existence of a second fault, the Tacoma Fault, has buckled the intervening strata in the Seattle Uplift. USGS says the Seattle-area has a 75 per cent or greater chance of being hit by a damaging earthquake in the next century.
A deep earthquake off the west coast of Vancouver Island on December 16, 1957, with M 5.9, had only one aftershock, and intensities recorded were not much higher than III. The earthquake source was 52 km deep with the epicenter located close to the Nisqually River delta in the same location as the M7.1 earthquake of 1949. Puget Sound Earthquake – Washington – April 13, 1949. Seek refuge under a desk, table, or other substantial furniture or fixtures. One overrun site is 10 kilometers northwest of downtown Seattle; another is on … Indoors. Puget Sound, Washington has had: (M1.5 or greater) 0 earthquakes in the past 24 hours 4 earthquakes in the past 7 days; 7 earthquakes in the past 30 days These deep earthquakes occurred in the … Unlike crustal earthquakes, the Puget Sound slab earthquakes, including the 1939 and 1946 Puget Sound earthquakes, lacked significant aftershocks. Puget Sound Earthquake Fault Map Resources USGS 2014 Significant Earthquakes Archive The very strong 1700 Cascadia earthquake List of the strongest world earthquakes, Cascadia was one of them Fault Attributes Key NAME is an 80-character field for the name of the fault (including section name, i.e., Denali fault, Holitna section). The Nisqually Earthquake had four aftershocks in the following two weeks.