The 1939 Oga earthquake (Japanese: 男鹿地震) struck Akita Prefecture, Japan on May 1, 1939. This event was a doublet earthquake, in which the mainshock occurred at 14:58 (JST), MJMA 6.8 (Mw 7.0), and an aftershock at 15:00 (JST), MJMA 6.7 (Mw 6.5). The earthquake left 27 people dead and 52 people injured, and 479 homes were destroyed.
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