The U.S. Geological Survey was still trying to unravel how an alert was sent Thursday morning for a nonexistent 5.9 earthquake outside Dayton, Nevada. A quake of that size wouldn't be implausible.

USGS said, “The ShakeAlert EEW system released an incorrect alert for a magnitude 5.9 earthquake near Reno and Carson City, Nevada. The event did not occur, and has been deleted from USGS websites and ...

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The United States Geological Survey put out a false alarm for a 5.9 earthquake east of Dayton, Nevada, on Thursday morning. "This was an errant earthquake warning sent out by the USGS’s ShakeAlert ...