fore·​shock | \ ˈfȯr-ˌshäk How to pronounce foreshock (audio) \

Definition of foreshock

: any of the usually minor tremors commonly preceding the principal shock of an earthquake

Examples of foreshock in a Sentence

Recent Examples on the Web The foreshock and flurry of aftershocks occurred at about the same depth, Jones said. Hayley Smith, Los Angeles Times, 5 Apr. 2021 Jones said there was a 5 percent chance that Friday's 4.6 quake could be a foreshock to a larger quake, KABC-TV of Los Angeles reported. Fox News, 19 Sep. 2020 Jones said that 5% of the time, an initial earthquake may actually be a foreshock that is preceding a larger earthquake. CBS News, 19 Sep. 2020 The strongest two — a 6.8 foreshock and the 7.1 mainshock — happened just four minutes apart. Sam Gross, USA TODAY, 16 May 2020 There were thousands of foreshocks and aftershocks felt throughout the region. CBS News, 16 July 2019 Vanacore says that this latest series of events seems to be more of a traditional earthquake sequence rather than a swarm, with a bigger temblor surrounded by its own entourage of smaller foreshocks and aftershocks. National Geographic, 11 Jan. 2020 When solar wind storms strike Earth, that solar radiation first crashes into a part of Earth’s magnetic field called the foreshock. Jennifer Leman, Popular Mechanics, 25 Nov. 2019 However, that quake would now be considered a foreshock to the Friday night temblor. Jason Green, The Mercury News, 5 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'foreshock.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of foreshock

1902, in the meaning defined above

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The first known use of foreshock was in 1902

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Cite this Entry

“Foreshock.” Dictionary, Merriam-Webster, Accessed 22 Jun. 2021.

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