November 7, 1433 Earthquake: Tokaido, Japan

1433, November 7, about midnight local time. There was a strong earthquake on the southeast of Honshu Island. About 30 shocks, causing victims, were felt through the night at Kamakura. Aftershocks of the earthquake continued for another 20 days. There was much destruction in the region of Aizuwakamatsu (Fukushima Prefecture). The tremors were felt rather strongly in Yamanashi Prefecture. The earthquake was felt at Kyoto. There was a tsunami on the south coast of the Kanto distict. (reference #414)

This earthquake occurred on 7 November 1433 (Gregorian Calendar) or 16 September in fifth year of the Eikyo era (Japanese calendar). The magnitude M was estimated as 7 by Utsu (2002) and M ≥ 7.0 by Usami et al. (2013). Several independent historical documents described the ground shaking felt in a wide area in the Kanto region, landslide and shaking damage to temples and shrines in Kamakura and surrounding regions, and many casualties and aftershocks that continued for 20 days (Fig. 5b). One document mentioned that water flew upstream of Tone River in Tokyo Bay. If this indicates a tsunami, this earthquake may be considered a Kanto earthquake, although the tsunami damage from any location was not documented (reference #13909)