from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of foreshock.


Sorry, no etymologies found.


  • There December what's called foreshocks, waiting for a largest quake about one hour or less later.

    CNN Transcript Jan 12, 2010

  • A typical large earthquake will include a mainshock, the largest earthquake in a sequence, and may be preceded by smaller earthquakes known as foreshocks and followed by smaller earthquakes called aftershocks.

    Yellowstone Earthquake Swarms

  • In April 2009 a major earthquake in Italy was preceded by a series of small earthquakes, known as foreshocks, but that doesn't always mean a big one is coming.

    Breaking News: CBS News

  • One such sign is a pattern of small "foreshocks" that leads to a major shock.

    Living on the Fault Line

  • Occasionally there will be foreshocks, but unfortunately, we never really know when a smaller earthquake is a foreshock and when it isn't, and as far as I know we really didn't have any particular warning for this earthquake.

    CNN Transcript Jan 12, 2010

  • According to local authorities, a significant number of foreshocks smaller seismic events preceding a large event had been experienced in the region prior to the main shock.

    Earthquake Warning Was Removed From Internet - The Lede Blog -

  • One of the things we find about foreshocks is that they happen within 10 kilometers of their main shock.

    My Journey to the Top

  • Sometimes there are foreshocks, but there are no geological clues offered here.

    CNN Transcript Jun 17, 2005

  • It apparently occurred without any significant foreshocks.

    CNN Transcript Dec 22, 2003

  • ( "The problem is distinguishing between those and other patterns that don't turn out to be foreshocks, because no large earthquake follows them," says Karen McNally, another of Caltech's geophysicists.)

    Living on the Fault Line


Log in or sign up to get involved in the conversation. It's quick and easy.