1857 Fort Tejon earthquake
... that four of the twentieth-century Parkfield earthquakes had similar intensities to the dawn foreshock of the great 1857 Fort Tejon earthquake?
... that four of the twentieth-century <a href="./Parkfield_earthquake" id="mwDMY" rel="mw:WikiLink" title="Parkfield earthquake">Parkfield earthquakes</a> had similar intensities to the dawn <a href="./Foreshock" id="mwDMc" rel="mw:WikiLink" title="Foreshock">foreshock</a> of the great <b id="mwDMg"><a href="./1857_Fort_Tejon_earthquake" id="mwDMk" rel="mw:WikiLink" title="1857 Fort Tejon earthquake">1857 Fort Tejon earthquake</a></b>?