In this Jan. 3, 2019, file photo, a mobile phone customer looks at an earthquake warning application on an iPhone in Los Angeles. An earthquake early warning system operated by the U.S. Geological Survey has been activated in Oregon on the 10th anniversary of the devastating earthquake and tsunami in Japan. California already has the system. Washington state joins it in May, which will complete coverage of the West Coast of the contiguous United States. (AP Photo/Richard Vogel, File)
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