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A magnitude 5.7 earthquake struck Shizuoka Prefecture's west side at 1:04 a.m. on November 8, according to the Japan Meteorological Agency (JMA). The quake, with an estimated depth of 40 km, caused at least 15 injuries and train delays in Aichi and Shizuoka prefectures. The JMA warned of the possibility of larger earthquakes over the next two to three days.