3 significant earthquakes struck different parts of the world within hours on Thursday, with Venezuela experiencing a rare doublet, Japan recording a magnitude 6.9 and California hit by a 5.6 quake.

Note: Map shows the area with a shake intensity of 3 or greater, which U.S.G.S. defines as “weak,” though the earthquake may be felt outside the areas shown. All times on the map are Japan time. The ...