foreshock foreshock


  • (n) a tremor preceding an earthquake


  • 'Top Two' impact already felt

    One in every eight or nine earthquakes is followed by an even more powerful aftershock, officially making the first quake into a foreshock.
    on February 25, 2014     Source: The Salinas Californian


  1. "Anytime we have an earthquake anywhere, there's a chance it's a foreshock to something larger," said Kate Hutton, a seismologist at the California Institute of Technology in Pasadena.
    on Mar 24, 2009 By: Kate Hutton Source: San Diego Union Tribune

  2. "We don't know for sure, but there's pretty good evidence that the last Big One started up there," Hough said. "So it's always been in the back of people's minds that maybe a moderate quake at Parkfield could be the foreshock to the next Big...
    on Jul 9, 2009 By: Susan Hough Source: Los Angeles Times

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tacit tacit
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