Northern California earthquake puts early warning system to the test

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Northern California earthquake puts early warning system to the test
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The people most rattled by the magnitude 6.4 earthquake early Tuesday said the alert didn't give them enough time to take cover as the temblor shook homes off foundations, knocked out power and water to thousands, and injured more than a dozen people.

As sensors picked up the first signs of, an alert was blasted to 3 million smartphone users telling them to “drop, cover, hold on.” It was hailed as the biggest test yet of the warning system since its public launch.

“It's really a groundbreaking, first-in-the-nation tool that hopefully saves lives,” said Brian Ferguson, a spokesperson for the California Governor's Office of Emergency Services. Jen Olson, who lives in Arcata about 25 miles from the epicenter, said she was awoken by shaking and her phone going off at the same time. She’s not sure which woke her up first, but she said the loud noise and bright light from her phone probably helped her realize the severity of the quake.

Jay Parrish, the city manager of Ferndale, said he wasn’t aware of anyone getting the alert. Unlike a tsunami or flooding in which there is plenty of time to prepare for a potential disaster, he didn’t think an earthquake warning system could provide enough advance notice. A glitch in an earthquake warning app for San Diego residents that relies on the system’s data falsely alerted people more than 650 miles away from the epicenter.

“The physical processes along an earthquake fault before and during a rupture are so complex that seismologists have all but given up on trying to achieve the elusive goal of predicting when a strong quake will happen,” it read.“From a technical standpoint, I would say the system did a great job,” Allen said.

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