The 1703 Genroku earthquake (元禄大地震, Genroku Daijishin) occurred at 02:00 local time on December 31 (17:00 December 30 UTC). The epicenter was near Edo, the forerunner of present-day Tokyo, in the southern part of the Kantō region, Japan. An estimated 2,300 people were killed by the destruction and subsequent fires. The earthquake triggered a major tsunami which caused many additional casualties, giving a total death toll of at least 5,233, possibly up to 200,000. Genroku is a Japanese era spanning from 1688 through 1704.
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