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Damaging earthquakes are well known in the Pacific Northwest, including several larger than magnitude 7, most notably the M9 1700 Cascadia earthquake and the M7.0–7.3 earthquake in about 900AD on the Seattle Fault. The M6.5 1965 Puget Sound earthquake shook the Seattle, Washington, area, causing substantial damage and seven deaths. This event ...
Puget Sound: VI: Tsunami [5] 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. The principles described also apply to ...
Logo of the ANSS. The Advanced National Seismic System (ANSS) is a collaboration of the United States Geological Survey (USGS) and regional, state, and academic partners that collects and analyzes data on significant earthquakes to provide near real-time (generally within 10 to 30 minutes [1]) information to emergency responders and officials, the news media, and the public. [2]
WA state has the second-highest risk of large earthquakes in the U.S., according to the Washington Department of Natural Resources.
The Tacoma Fault Zone marks the south end of the Seattle Uplift, of which the similar and related Seattle Fault Zone marks the north end. This uplift is believed to be either a slab of rock about 15 km thick being pushed up a ramp, or a wedge being popped up between these two faults, by tectonic forces from the south or south-west as tectonic plates riding on top of the Juan de Fuca plate are ...
The app began providing earthquake alerts in Oregon on March 11, 2021 [44] and in Washington state on January 26, 2022. [45] MyShake only delivers alerts for earthquakes exceeding M W 4.5 and that will produce a shaking intensity greater than three. [43]
— USGS Earthquakes (@USGS_Quakes) April 5, 2024 According to the Geological Survey, Friday's 4.8 magnitude earthquake was the strongest to hit New Jersey in nearly 250 years.
These reports looked at the timing of abrupt uplift and subsidence around Restoration Point and Alki Point (distant right side of picture), [2] tsunami deposits on Puget Sound, [3] turbidity in lake paleosediments, [4] rock avalanches, [5] and multiple landslides around Lake Washington, [6] and determined that all these happened about 1,100 ...