how long was the northridge earthquake

Please refer to the appropriate style manual or other sources if you have any questions. Forty thousand people were left in dire need of shelter and food, and the region suffered more than $20 billion in damage overall. Wilson declares state of emergency, asks President Bill Clinton for federal aid. Pete Wilson tours Northridge earthquake area by helicopter. The earthquake was one of the … 10:05 a.m.: 236 military tents with a capacity for up to 7,340 people are expected to be in place at 7 Valley locations by nightfall. 5:17 a.m.: Quake-damaged scoreboard at Anaheim Stadium crushes upper-deck seating. More: Follow @RealTime94Quake for Livetweets | Remembering the Northridge Earthquake | Quake Prep Tips. 5:01 p.m.: Citywide curfew to be extended another day, LAPD Chief Willie Williams says. 7:01 a.m.: Northridge Earthquake death toll rises to 33, including 15 at Northridge Meadows Apartments, officials say. Parts of LA and Ventura counties are without running water or gas. 7:36 a.m.: Death caused by 14 Freeway collapse is identified as a law enforcement officer, fire spokesman says. With a moment magnitude of 6.7, the Northridge earthquake was the strongest earthquake to strike the Los Angeles area since the 1971 San Fernando earthquake, which also had a magnitude of 6.7. It changed quake history at 4:31AM on January 17, 1994. A 6.7 magnitude earthquake struck underneath the San Fernando Valley community of Northridge that hit 20 years ago Friday, killing 57 people and causing $20 billion in … 2:36 p.m.: Los Angeles Department of Water and Power officials say three of four LA aqueducts were severed, but local water supply will last at least 7 to 10 days. 6:01 a.m.: More than 500 hospitalized, 2,300 treated and released Tuesday, hospital officials say. 5:20 p.m.: At least 14 people confirmed dead at Northridge Meadows Apartments. 7:42 p.m.: Nearly 8,000 homes are still without water in Simi Valley. On January 17, 1994, at 4:31 a.m. PST, a magnitude 6 .7 earthquake centered in Northridge struck the southern California area. Nevertheless, tens of thousands of buildings were damaged, with many “red-tagged” as unsafe to enter and many more restricted to limited entry (“yellow-tagged”). Damage occurred up to 85 miles (125 km) away, with the most damage in the west San Fernando Valley, and the cities and neighborhoods of Santa Monica, Hollywood, Simi Valley and Santa Clarita. 10:50 a.m.: Gov. Shake your way into this quiz. 7:15 p.m.: More than 800 people injured in Ventura County. Cars lie smashed by the collapsed Interstate 5 connector few hours after Northridge earthquake, on January 17, 1994, in Sylmar, California. The 1994 Northridge earthquake was a moment magnitude 6.7 (Mw), blind thrust earthquake that occurred on the annual Martin Luther King, Jr. Day holiday, on Monday, January 17, 1994. See a timeline of key events connected to the 1994 Northridge Earthquake and its aftermath in the days, weeks, months and years that followed. More than 1,500 National Guard troops are expected within 24 hours. 9:10 a.m.: National Guard activates its emergency operations centers to help earthquake victims. Earthquake Northridge California 1994 . What was the damage to buildings and structures? 6:47 a.m.: As many as 50 structures are reported on fire. The initial Northridge quake shook with a staggering Richter magnitude of 6.9, and lasted for more than 20 seconds. At 4:31 a.m., a forgotten earthquake fault awoke from a long slumber, triggering the most devastating seismic event in Los Angeles history. Called the Northridge Earthquake, it now stands as … Published Jan 17, 2019 6:15 AM Ray Hudson reacts as a friend's home goes … The Northridge earthquake that struck at 4.31 a.m. on Monday, January 17, 1994 affected an area of 2,192 square miles in the San Fernando Valley, a densely populated residential area of northern Los Angeles, California. Wilson says. 11:01a.m. Articles from Britannica Encyclopedias for elementary and high school students. The Northridge Earthquake Was 25 Years Ago, And It Looked Like This By Ryan Fonseca. 2:08 p.m.: President Bill Clinton declares LA County a national disaster area, releasing federal relief for victims of the Northridge quake. The major shock lasted 10–20 seconds and registered a magnitude of 6.7. The outcome resulted in one of the most financially destructive natural disasters in American history. 4:31 a.m.: A major earthquake strikes in Los Angeles. 5:50 p.m.: City-wide curfew in LA is in effect until dawn. The earthquake occurred along a "blind" thrust fault, close to the San Andreas fault. The acute phase of the disaster ended within 48 to 72 hours and public health then became the predominant health-care issue. Affecting much of southern California, the Northridge, California, earthquake of January 17, 1994 was the costliest earthquake in U.S. history in terms of insured losses (both actual and adjusted for inflation). The Northridge Earthquake: January 17, 1994. At 4:30 am, on January 17, 1994, residents of the greater Los Angeles area were rudely awakened by the strong shaking of the Northridge earthquake. In the timeline below, follow along with the events as they unfolded: Local news from across Southern California. 2:20 p.m.: Death toll rises to 29 and hundreds are injured as the search for survivors continues. Most of the casualties occurred in wood-frame apartment buildings, popular in the San Fernando Valley, and particularly in those with weak first floors or lower-level parking garages. The earthquake occurred beneath Northridge, a suburb in the San Fernando Valley, 30 km northwest of Los Angeles (see map on next page). “It was total devastation in here,” Philip Bachelis said, gesturing at his now-refurbished home. The quake, which hit the Los Angeles region on January 17, immediately killed more than 60 people and injured thousands more. Known as the Northridge Earthquake, it caused at least 57 fatalities (a subsequent study put the death toll at 72, including heart attacks) and injured thousands. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. 4:39 a.m.: 5, 14, 10 freeways are severely damaged by the earthquake, the California Highway Patrol reports. At about 4:30 a.m. Jan. 17, 1994, a magnitude 6.7 earthquake erupted in Northridge, according to the California Institute of Technology (CalTech). 1:10 p.m.: “Sporadic” looting leads to more than 25 arrests citywide, LAPD says. 4:40 a.m.: Massive power outages are reported across LA. LOS ANGELES – The 1994 Northridge earthquake shook Los Angeles residents from their sleep, caused freeways to crumble and flattened buildings. 12:17 p.m.: Gov. About 300 classrooms remain unsafe. 4:37 a.m.: Fires, flooding, buildings down -- widespread damage reported across Southern California. The quake had a duration of approximately 10–20 seconds, and its peak ground acceleration of 1.82 g0 (17.8 m/s ) was the highest ever instrumentally recorded in an urban area in North America. The Northridge Earthquake struck the Southland 27 years ago, with the lasting impact still rippling into 2021. The Guinness Book of World Records rates the earthquake at a 7.5. The timing of the earthquake (early morning during a federal holiday) is thought to have prevented a higher death toll, as most residents were in their beds, rather than on failed freeways or in other collapsed structures (such as office buildings or parking lots). Corrections? 3:15 p.m. Southern California Edison reports that power is restored to all but 150,000 homes and businesses. 1 Three counties, Los Angeles, Ventura and Orange were affected by the The third major earthquake to occur in the state in 23 years (after the 1971 San Fernando Valley and 1989 San Francisco–Oakland earthquakes), the Northridge earthquake was the state’s most destructive one since the San Francisco earthquake of 1906 and the costliest one in U.S. history. One such disaster is the 1994 Northridge earthquake. A magnitude 6.8 (Ms) earthquake centered under the community of Northridge in the San Fernando Valley shook the entire Los Angeles metropolitan area at 4:31 a.m. local time on Monday, January 17, 1994. The magnitude 6.7 Northridge Earthquake … Fatality estimates range from just under 60 to more than 70 people killed, with most studies placing the number at around 60. A magnitude 6.7 quake caused by the sudden rupture of a previously undocumented blind thrust fault woke thousands of Angelenos, driving the City of Angels into a nightmarish frenzy. 10:32 a.m.: Electricity restored to all parts of LA except for 7,500 customers in the San Fernando Valley, utility officials say. It occurred at 4:30:55 a.m. (PST) and was located in the San Fernando Valley region in the County of Los Angeles. But for about 30 seconds in Los Angeles, it sure seemed like it. The primary duration was seven seconds, although there was shaking that lasted as long as 20 seconds. Wilson dispatches 500 National Guard troops. 6:05 a.m.: All LAX flights are canceled; Metrolink service is shut down. Updates? By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. 6:50 a.m.: Hundreds of gas main and water main breaks reported. How big was the earthquake? Accordingly, a number of legislative changes were made in the aftermath of the Northridge earthquake. Federal government releases $283 million in earthquake aid, according to White House Press Secretary Dee Myers. The earthquake was magnitude 6.7 on a previously unidentified thrust fault, creating strong horizontal and vertical ground motion lasting up to 10 seconds. A 6.7 magnitude earthquake struck underneath the San Fernando Valley community of Northridge that hit 20 years ago Friday, killing 57 people and causing $20 billion in damage: collapsed buildings and freeway overpasses, snapped water and gas lines, rampant fires and landslides. 9:01 a.m.: Crews restore service to 40,000 homes and identify at least that many more that are still without gas, the Southern California Gas Company says. The percentage of buildings completely destroyed was relatively low in light of the strength of the ground motions. 1 p.m.: Tens of thousands of LA residents “may be homeless," Insurance Commissioner John Garamendi says. The earthquake's epicenter was in Northridge, CA, and it was a magnitude 6.7 shock that proved to be the most costly earthquake in United States history. This was the first earthquake to strike directly under an urban area of the United States since the 1933 Long Beach earthquake. The shaking heavily damaged communities throughout the San Fernando Valley and Simi Valley, and the surrounding mountains north and west of Los Angeles, causing estimated losses of $20 billion. Some 125,000 people were made at least temporarily homeless. 8:00 a.m.: LAUSD plans to reopen most schools. All rights reserved, Porter Ranch Doctor Charged with Collecting $6M in False Medicare Claims, LA County DA Drops Bid for Death Sentence for Mother, Boyfriend in 10-Year-Old Boy's Torture and Killing. 1994 Northridge earthquake At 4:31 a.m. on January 17, 1994, a 6.7-magnitude quake struck the San Fernando Valley, a densely populated area of Los Angeles located 20 miles northwest of … (A “g” of acceleration is equivalent to the acceleration of gravity. 1:05 p.m.: Thousands of buildings in LA and Ventura counties reported damaged. 7 a.m.: Multiple people found dead at a collapsed apartment building in the 9500 block of Reseda Blvd. Our editors will review what you’ve submitted and determine whether to revise the article. 12:02 p.m.: Power restored to nearly half of 1.4 million LADWP customers. The extent of the property damage in an area so well-prepared for earthquakes was staggering. Roads and bridges damaged by the Northridge earthquake in California, 1994. 82,000 residential and commercial units and 5,400 mobile homes were damaged or destroyed. : Officials cancel dusk-to-dawn curfew. The 6.8 magnitude Northridge earthquake was blamed for some 60 deaths, thousands of injuries and billions in property damage. Although considered “moderate”, with a moment magnitude of 6.7, it was the most costly quake in United States history – and the most damaging to strike the U.S. since the San Francisco quake of 1906. 5:40 a.m.: Caltech reports that the magnitude-6.6 earthquake was centered in the northern San Fernando Valley area. Twenty years ago, southern California experienced a “big one.” A 6.7-magnitude temblor waylaid Los Angeles on January 17, 1994. Timeline: The 1994 Northridge Quake. Northridge Earthquake 1994 Northridge earthquake 1994, one of the most well-known earthquake by Californian people. The San Fernando Earthquake, [which] happened back in 1971 and was almost a twin to the Northridge Earthquake, was magnitude 6.7 and in the northern part of the Valley. The 1994 Northridge earthquake killed more than 50 people and created widespread devastation in Los Angeles. As Californians were nestled in bed during the early hours of the morning, the Northridge Earthquake erupted throughout the west San Fernando Valley at 4:31 a.m. on January 17, 1994. CSU Northridge, USC and UCLA are among the colleges closed. The Northridge Earthquake struck on January 17, 1994 at 4:30:55 a.m. Property damage was severe and widespread; although the worst damage was sustained by communities in the western and northern San Fernando Valley, other areas of Los Angeles county were affected, as were parts of Ventura, Orange, and San Bernardino counties. The earthquake occurred just after 4:30 am local time along a previously undiscovered blind thrust fault in the San Fernando Valley. The Northridge Earthquake was one of the most destructive earthquakes in Los Angeles history. A significant portion of the transportation system around Los Angeles was shut down, as sections of major freeways (including the Santa Monica Freeway and the Golden State Freeway) collapsed and numerous bridges sustained heavy damage. 10:09 a.m.: Red Cross, Salvation Army set up shelters. Secondly, how long did the 1994 Northridge earthquake last? 8:32 a.m.: Some 10,000 households in northwest San Fernando Valley remain without running water. Omissions? Subsequently, question is, how long did the Northridge earthquake last? Property damage estimated at more than $400 million. At least 170 facilities are seriously damaged. The earthquake was not happened in the city of Los Angeles, but it happened near San Fernando Valley, 16.5 miles northwest of Los Angeles. 5:20 a.m.: Between 30 and 40 explosions are reported on Cal State Northridge campus. While every effort has been made to follow citation style rules, there may be some discrepancies. 7:15 a.m.: LAUSD schools remain closed for the fifth day in a row. 9:18 a.m.: President Bill Clinton vows to help victims deal with the earthquake and its aftermath. 1:00p.m. 7:32 a.m.: About 36,000 LADWP customers are still without water this morning for the fourth day in a row. The earthquake caused very large ground motions with peak accelerations of 0.5 to 1.0 g in the Northridge area, decreasing to 0.1 g at distances of about 50 kilometers (31 miles). Get a Britannica Premium subscription and gain access to exclusive content. 20 seconds Keeping this in view, which freeway collapsed the Northridge earthquake? Strong ground motion was felt … Interested in testing your earthquake knowledge? Let us know if you have suggestions to improve this article (requires login). That includes the 6.7 Northridge quake in 1994 (which was 2.8 times stronger than Thursday’s earthquake) and the 7.1 Hector Mine quake in the Mojave Desert in 1999 (11 times stronger). Its epicentre was in Northridge, a suburb located about 20 miles (32 km) west-northwest of downtown Los Angeles. 12:01: Death toll rises to 55 people, officials say. The Northridge earthquake caused at least 57 deaths and over 9,000 injuries. 9:05 a.m.: Gov. Look back at KNBCʼs coverage of the the 1994 Northridge earthquake. 7:21 a.m.: LAUSD schools remain closed for second day and nearly all schools in surrounding districts are closed. 4:52 a.m.: Phone service is reported down in some areas. 2:06 p.m.: State will underwrite loans of up to $200,000 for small-business owners devastated by Northridge Earthquake, Gov. 5:38 a.m.: Federal Emergency Management Agency announces it will respond to the earthquake. Urban Search and Rescue Teams and Disaster Medical Assistance Teams were important elements in the response to the Northridge earthquake. January 17, 1994, at 4:31 AM this Northridge earthquake struck Los Angeles, California. Fires that broke out in the San Fernando Valley and in Venice and Malibu caused additional harm. Northridge earthquake of 1994, earthquake that struck the densely populated San Fernando Valley in southern California, U.S., on Jan. 17, 1994. The 1994 "Northridge" earthquake hit the Los Angeles area about 4:30 AM on Martin Luther King Day. Most significantly, the state created the California Earthquake Authority, a publicly managed but privately funded organization offering basic residential earthquake insurance. After the Jan. 17, 1994, Northridge earthquake, the new windows were about all left intact. Copyright © 2021 NBCUniversal Media, LLC. For many engineers, this earthquake produced the first visual evidence of what a damaged but life-safe building looked like. 4:56 a.m.: A train that may have been hauling hazardous materials derails near the Chatsworth/Northridge area. 7:33 a.m.: LAUSD schools remain closed for third day in a row. 10:32 a.m.: President Bill Clinton arrives in Southern California. in Northridge. Ring in the new year with a Britannica Membership, This article was most recently revised and updated by, https://www.britannica.com/event/Northridge-earthquake-of-1994, National Institute of Standards and Technology - Engineering Laboratory - Earthquake Northridge California 1994, Northridge earthquake of 1994 - Student Encyclopedia (Ages 11 and up). The Northridge quake caused wide-spread damage, with sections of major freeways, parking structures, office buildings collapsing, […] 5:45 a.m.: Los Angeles Mayor Richard Riordan declares a state of emergency. 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