On Wednesday, 28 February 2001 at 10:54 PST (1854 UT) the Puget Sound region of western Washington State was shaken by a magnitude (Mw) 6.8 earthquake. Its epicenter was 47.159°N 122.733°W and hypocenter was 51 km beneath the Nisqually River delta area, approximately 18 km northeast of Olympia, Washington. Damage from this earthquake had many similarities to damage noted for earthquakes in 1949 (M = 7.1) and in 1965 (M = 6.5). Damage included partial collapse of walls in unreinforced masonry buildings, particularly those on soft soil, lateral spreading and liquefaction in susceptible locations, and damage to...

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