Bay Area expert explains why ShakeAlert overestimated 4.2 magnitude NorCal earthquake

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Bay Area expert explains why ShakeAlert overestimated 4.2 magnitude NorCal earthquake
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Many Bay Area residents got a loud notification when Wednesday's earthquake happened. Not only that, the alert listed the quake at 5.7. Why? An expert from Berkeley explains.

Bay Area seismology expert explains what happened with Wednesday's NorCal earthquake alert on the MyShake app.The epicenter was near Isleton, about 20 miles northeast of Antioch.4.2 magnitude earthquake strikes in Sacramento County, USGS saysMany Bay Area residents got a loud notification when it happened. Not only that, the alert listed the quake at 5.7. Why?

Dr. Angie Lux with the Earthquake Early Warning Project at the Berkeley Seismology Lab joined ABC7's "Getting Answers" to talk about the alert system and how well it worked Wednesday. We asked Lux all about "ShakeAlert" and the "My Shake App" and what Berkeley Seismology Lab's relationship is with the system, as well as how it is decided who receives these alerts.

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