Nisqually Earthquake 20 th anniversary a reminder to consider disaster preparedness and insurance coverage. The damage was significant. In February 2001,the Nisqually Earthquake collapsed buildings and bridges, disrupted gas, electric, and phone service, and triggered destructive landslides. The earthquake’s epicenter was 32 miles below Anderson Island, which helped buffer some of … The distances in italics are to the surface above the point of origin. In the Puget Sound area, this quake caused 400 injuries, one Fortunately for the region, this was a deep earthquake, which caused less surface shaking. The Nisqually earthquake hit the southern end of Puget Sound causing damage to the ports of Seattle and Tacoma. December 15, 2009 by Arne. Nisqually quake damaged nearly 300,000 Puget Sound area households. It’s been years since the magnitude 6.8 Nisqually earthquake rattled the Pacific Northwest and awakened people to the dangers we face. Two mechanisms are often cited as the cause of these earthquakes: 1. Officials called it the Nisqually quake after the delta where the quake was centered northeast of Olympia. The April 29, 1965 Earthquake. “While Nisqually is a good reminder that we are in a seismically active area, there are bigger earthquakes we need to keep in mind and address,” cautions Cale. In response to the February 28, 2001 Nisqually earthquake, the staff of the Washington Division of Geology and Earth Resources did a reconnaissance of ground failures in the southern Puget Lowland. California’s 1994 Northridge earthquake had a similar moment magnitude (6.7 Mw) but This evening’s M7.8 earthquake [7/21/20, 10:12 PM AKDT] occurred on the well-known subduction zone interface off the Alaska Peninsula. It registered 6.8 on the Richter scale and shook for 40 seconds. Twenty years ago this Sunday, the Nisqually earthquake rattled the region. The distances in italics are to the surface above the point of origin. epicenter) of the earthquake, was located about 39 (11) miles NE of the State Capitol in Olympia, 37 (16) miles SW of downtown Tacoma, and 51 (40) miles SSW of downtown Seattle. That may seem out of place in the Pacific Northwest, where the oceanic Juan de Fuca plate subducts beneath the continental North American plate, but that collision of plates creates the bending stresses necessary to cause extension within the Juan de Fuca plate, where the Nisqually earthquake occurred. In less than a minute, an estimated 200 people were injured. Therefore, FEMA should pay $29,117.08, or the 40% of the repair costs not covered by insurance, and the School District should assume 20% of the remaining non-earthquake related costs. In addition to the earth-movement damage that it would cause, the uplifting and dropping of the ocean floor along the fault line is expected to cause a tsunami wave. Whether the craters and head scarp were caused by the Nisqually earthquake is problematic because the resolution of the legacy data is too low to resolve such small features for comparison. When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel.. Olympia, WA -- Almost four months have passed since the Nisqually Earthquake rumbled through Washington, leaving record-setting property damages that residents and businesses would continue to discover for weeks to come. 15 years after the nisqually earthquake 2001 nisqually quake washington gets mobile earthquake strong ground motions and site effects seattle washington earthquake insurance Earthquake 4 6 In Washington Rattles Seattle Area Awake OvernightSeattle Earthquakes A Recap Of From 1700 2019 Kiro 7 NewsFull Rip 9 0 Explores Seattle S Earthquake DangersEarthquake 4 6 In Washington… Read … Figure 4 Scientists placed the epicenter of the earthquake at approximately 30 miles below the Nisqually River delta, 11 miles north of Olympia. Most of the property damage occurred near the epicenter. In Seattle, the quake damaged buildings, weakened bridges, started fires and opened cracks in the earth. It was the strongest earthquake to hit us since 1965. The intraslab earthquake had a moment magnitude of 6.8 and a maximum Mercalli intensity of VIII (Severe).The epicenter was in the southern Puget Sound, northeast of Olympia, but the shock was felt in Oregon, Canada, eastern Washington, and Idaho. Even a decade ago, scientists knew the Northwest was vulnerable to much nastier shakes than the … February 28, 2001: The Nisqually Earthquake, at 6.8 magnitude, was centered to the south in Nisqually, but caused some structural damage all the way in Seattle. Dehydration and metamorphism of minerals in the down-going slab cause the plate to shrink It was nearly 11 a.m. on a Wednesday, and the state legislature was in full swing. But for all its scattered dramas — and at least $2 billion in damage — it was a mild demonstration of the seismic forces that threaten the Pacific Northwest. 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. How big was the Nisqually earthquake? Intraslab (Benioff zone) earthquakes, such as the M 6.7 2001 Nisqually earthquake, caused by slippage or fracturing on a small part of the subducting plate at a depth of around 50 km (31 miles). For example, the Nisqually earthquake in 2001 happened on a fault 30 miles deep. At 10:54 a.m. on February 28, 2001, a deep earthquake centered near the Nisqually Delta northwest of Olympia startles the entire Puget Sound region and causes more than $1 billion in damage to area buildings and roads. Damages were estimated over $500 million dollars. Ten years ago on February 28th, Washington State was struck by the 6.8 Nisqually Earthquake. false. Relatively shallow crustal earthquakes, generally less than 25 km (16 miles) deep, caused by stresses and faulting in the near-surface crustal structures. On Feb. 28, 2001, the magnitude 6.8 Nisqually earthquake centered 32 miles beneath the Puget Sound region killed one and injured 700, creating between $1 billion and $4 billion in damage. The 2001 Nisqually earthquake occurred at 10:54:32 local time on February 28, 2001 and lasted nearly a minute. However, these are precisely the type of features expected to be generated by severe ground shaking (Field et al., 1992). Impacts The Nisqually earthquake occurred at 10:54 a.m. local time on Wednesday 28 th February 2001. This was one of several large earthquakes that occurred in the Puget Sound region in the prior 52 years and caused property damage valued at $1–4 billion. One person died of a heart attack and several hundred were injured. The Pacific Northwest Seismic Network summarized this mid-morning quake as “an eerie, 6.5-magnitude revisitation of the 1949 quake, centered again near Olympia, [which] caused the deaths of four elderly women who suffered heart attacks and three other persons hit by falling debris.”. Even though it wasn’t the “big one,” last year’s Nisqually earthquake caused damage to nearly 300,000 residences or almost one out of every four households in the Puget Sound area, according to a new University of Washington study. When the Nisqually Earthquake struck 15 years ago, on February 28, 2001, people in our region were shaken - literally and figuratively. On Feb. 28, 2001, the magnitude 6.8 Nisqually earthquake centered 32 miles beneath the Puget Sound region killed one and injured 700, creating between $1 billion and $4 billion in damage. See also the following news stories: Seattle Times Earthquake Photos; Seattle Times coverage 3/1/01 The Saturday after the 1996 Duvall earthquake William Steele, who at the time was the Seismology Laboratory Coordinator at the University of Washington, warned that aftershocks were possible for days and even weeks after, just like in 1932. The February 28, 2001, Nisqually, Washington, earthquake (Mw = 6.8) Earthquake prediction is an area of intense … An example of a deep earthquake is the M6.8 Nisqually Earthquake that occurred in the Pacific Northwest in 2001. At 10:54 a.m. on February 28, 2001, a deep earthquake centered near the Nisqually Delta northwest of Olympia startles the entire Puget Sound region and causes more than $1 billion in damage to area buildings and roads. Twenty years ago today, Western Washington was rocked by the 6.8 magnitude Nisqually earthquake for approximately 45 seconds. The big shake occurred at 10:54 a.m. and caused $2 billion in damage. This evening’s M7.8 earthquake [7/21/20, 10:12 PM AKDT] occurred on the well-known subduction zone interface off the Alaska Peninsula. That's when the 6.8 magnitude Nisqually quake hit the region. Spotlight: 2001 Nisqually Earthquake On February 28, 2001, a 6.8 magnitude earthquake from 30 miles below the Nisqually River Delta shook the Pacifi c Northwest. This was caused by mineral changes as the plate moved farther into the mantle. While we knew that Nisqually-type earthquakes had happened near there in the past, we did not know the location of the fault that the earthquake occurred on. Strong ground motion can also trigger landslides —known as earthquake-induced landslides —in areas with steep slopes, such as eastern Kentucky. Ten years ago, on February 28, 2001, the Nisqually Earthquake shook the Puget Sound region. The intraslab earthquake had a moment magnitude of 6.8 and a maximum Mercalli intensity of VIII (Severe). 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