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The 1965 Puget Sound earthquake occurred at 08:28 AM PDT (15:28 UTC) on April 29 within the Puget Sound region of Washington state. It had a magnitude of 6.7 on the moment magnitude scale and a maximum perceived intensity of VIII (Severe) on the Mercalli intensity scale. It caused the deaths of seven people and about $12.5–28 million in damage.
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 ...
The epicenter was in the southern Puget Sound, northeast of Olympia, but the shock was felt in Oregon, British Columbia, eastern Washington, and Idaho. [6] This was the most recent of several large earthquakes that occurred in the Puget Sound region over a 52-year period and caused property damage valued at $1–4 billion.
Do small earthquakes stop big ones from occurring? No; a magnitude 8 earthquake releases 1 million times more energy than a magnitude 4, and 1,000 times more than a magnitude 6.
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 ...
April 17 – The first SDS march against the Vietnam War draws 25,000 protestors to Washington, DC. April 21 – The New York World's Fair in Flushing Meadows reopens. April 25 – Sixteen-year-old sniper Michael Clark kills 3 and wounds others, shooting at cars from a hilltop along Highway 101 just south of Orcutt, California .
(DGER [9]) One model of the Seattle Uplift: Cross-section (south to north) along the east side of central Puget Sound, looking west. TB = Tacoma Basin EPZ = East Passage Zone (Maury Island), SFZ = Seattle Fault Zone (Alki Point). Grey dots are hypocenters of earthquakes of magnitude 2 or more for 1970–2001. (Fig. 17D from Johnson & others 2004)
According to Puget Sound Energy, which serves approximately 1.2 million electric and over 900,000 natural gas customers in the Puget Sound area, as of 11:59 p.m. local time Wednesday, they have ...