1586 Tenshō earthquake
| Local date | January 18, 1586 |
|---|---|
| Local time | 23:00 JST |
| Magnitude | 7.9 MJMA |
| Epicenter | 36°00′N 136°54′E / 36.0°N 136.9°E |
| Max. intensity | JMA 7 |
| Tsunami | 5 m (16 ft) |
| Casualties | 8,000 dead (est.) |
The Tenshō earthquake (Japanese: 天正地震, Hepburn: Tenshō Jishin) occurred in Japan on January 18, 1586, at 23:00 local time. This earthquake had an estimated seismic magnitude (MJMA) of 7.9, and an epicenter in Honshu's Chūbu region. It caused an estimated 8,000 fatalities and damaged 10,000 houses across the prefectures of Toyama, Hyōgo, Kyōto, Osaka, Nara, Mie, Aichi, Gifu, Fukui, Ishikawa and Shizuoka. Historical documentation of this earthquake was limited because it occurred during the tumultuous Sengoku period.