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Time to Move to Los Angeles: City Unveils Early Earthquake Alert System


Written By: Jaymi Naciri


Tuesday, January 15, 2019

In a >

Those who have avoided Los Angeles for fear of an impending earthquakemdash;or simply lived with the fear of overstressed faults and grinding tectonic platesmdash;may be able to make those plans to move, or breathe a little easier from their So Cal home.

ldquo;Los Angeles has unveiled its long-anticipated earthquake early warning app for Android and Apple smartphones, which is now available for download,rdquo; said the Los Angeles Times. ldquo;ShakeAlertLA, an app created under the oversight of Mayor Eric Garcetti and the city, is designed to work with the U.S. Geological Surveyrsquo;s earthquake early warning system, which has been under development for years. Itrsquo;s designed to give users secondsmdash;perhaps even tens of secondsmdash;before shaking from a distant earthquake arrives at a userrsquo;s location.rdquo;

According to the app, a 5.0 or greater earthquake in Los Angeles County triggers an early warning, ldquo;often before you feel shaking,rdquo; that is sent out to smartphones. These ldquo;precious secondsrdquo; are critical, said Garcetti, allowing people to ldquo;stop elevators, to pull to the side of the road, to drop, cover and hold on.rdquo;

ShakeAlert makes Los Angeles the first city in the country with a public early warning system; more widespread use across California is in the works through Early Warning Labs, a Santa Monica-based company developing an app called QuakeAlert. In addition, ldquo;Hunter Owens, the cityrsquo;s data scientist, noted on Twitter that the apprsquo;s code has been made open-source for other cities or states to use,rdquo; saidnbsp;Curbed.

ldquo;For more than a decade, the USGS has worked with a group of universities and research institutions to secure funding and build out the sensor network for the ShakeAlert program, which distributes the seismic data to the City of L.A.rsquo;s app. The initial goal of the ShakeAlert system was to create an early warning system for the entire West Coast, but federal dollars to pay for development were repeatedly zeroed out during budgeting,rdquo;

The L.A. Times notes that, while not perfect, early warning systems ldquo;helped prevent deadly derailments of high-speed trains in Japan before shaking arrived from the magnitude 9.1 earthquake of 2011, for instance, signaling the trains to slow down. Memorably, the national Japanese broadcaster NHK aired an earthquake warning about 90 seconds before the strongest shaking arrived in Tokyo. Warnings that buzzed in >

According to one study, people in the epicenter of the Japan quake had a 15- to 20-second head start to find safety before the heaviest shaking occurred.



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Updated: Monday, January 21, 2019

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