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USGS sends out false phone alerts warning of 5.9 earthquake in Nevada

The USGS ShakeAlert system sent a false 5.9 magnitude earthquake alert affecting millions in Northern California and Nevada; the alert was canceled minutes later, and the system is under investigation.

  • The U.S. Geological Survey sent out false phone alerts warning of a 5.9 magnitude earthquake in Nevada on Thursday morning.
  • The USGS confirmed that the earthquake alerts were issued in error during system testing and later deleted the event from their website.
  • The MyShake app, run by UC Berkeley's Berkeley Seismological Laboratory, also sent out the false alert for the M5.9 event in Lyon County, Nevada.
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False Earthquake Alert Unnerves NorCal

The MyShake app claimed a 5.9-magnitude earthquake struck where no shaking was felt.

·United States
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Center

The U.S. Geological Inspection Service (USGS) announced to Joi that its system of automatic detection of earthquakes has issued an earlier report during this day, according to which a decision of 5.9 magnitude occurred near Dayton in the US state of Nevada, reports Reuters, taken by Agerpres.

·Romania
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WAGA broke the news in Atlanta, United States on Thursday, December 4, 2025.
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