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Dianne Feinstein
Napa, Calif., quake: Early-warning system gains support
Napa, Calif., quake: Early-warning system gains support

The success of an early warning system during Sunday's 6.0 magnitude Napa earthquake is generating more support for the fledgling network. Scientists at UC Berkeley released a video showing the system sending an alert to their computers when the quake struck. Officials said the system provided an alert 10 seconds before the quake was felt at Berkeley. Though Napa would not have gotten a warning because of its proximity to the epicenter of the earthquake, Richard Allen, director of UC Berkeley's Seismological Laboratory, said the alert showed the promise of the technology. The system works because while earthquakes travel at the speed of sound, sensors that initially detect...

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