The Nisqually earthquake was an intraslab earthquake, occurring at 10:54 a.m. PST (18:54 UTC). on February 28, 2001, and was one of the largest recorded earthquakes in Washington state history. The quake measured 6.8 on the MMS and lasted approximately 45 seconds. The epicenter of the earthquake was under Anderson Island, about 17 km (11 mi) northeast of Olympia. The focus was at a depth of 52 km (32 mi). Tremors were felt as far away as Scio, Oregon, across the border in Vancouver, Canada, and 175 miles east in Pasco, Washington.
By kkeps @ 2010-01-15 19:55:43