2000 Tottori earthquake
The 2000 Tottori earthquake occurred on 6 October 2000, at with a moment magnitude of 6.7 and a maximum Mercalli intensity of X. The epicenter was located in Nambu, near the border with Yasugi, Shimane. About $150 million in damage was caused, with 109,095 homes damaged or destroyed, and at least 182 people were injured.
Earthquake
The United States Geological Survey reported a moment magnitude of 6.7 and a focal depth of for the earthquake. The Japan Meteorological Agency recorded a magnitude of 7.3. This was the first time since the seismic intensity classification was revised in 1996 that a JMA maximum seismic intensity of 6+ or higher was recorded. A USGS seismic installation at Hino recorded 0.9402 g in ground acceleration and in ground velocity; the station data corresponded to a Modified Mercalli intensity of X.The earthquake was an almost pure left-lateral strike-slip event. It was not caused by the activity of a known fault, but by the activity of an unidentified underground fault. Multiple ground cracks appeared due to underground displacement. The aftershock area was distributed along the source fault of the main shock, from Yasugi City in Shimane Prefecture to Hino District in Tottori Prefecture, extending from south-southeast to north-northwest in a length of approximately 30 km and a depth of approximately 15 km. Prior to the earthquake, swarms of magnitude 5 earthquake activity occurred along the deep extension of the fault in 1989, 1990, and 1997. The earthquake also caused 367 landslides; 348 in Tottori, 18 in Okayama and one in Tokushima.
| Intensity | Prefecture | Locations |
| 6+ | Tottori | Hino, Sakaiminato |
| 6− | Tottori | Yonago, Hiezu, Hōki, Nambu |
| 5+ | Shimane | Matsue, Yasugi, Okuizumo |
| 5+ | Okayama | Niimi, Maniwa |
| 5+ | Kagawa | Tonoshō |
| 5− | Tottori | Daisen, Kotoura, Hokuei, Yurihama, Kurayoshi |
| 5− | Shimane | Izumo, Unnan, Ōda, Gōtsu |
| 5− | Okayama | Okayama, Takahashi, Kibichūō, Tamano, Kurashiki, Kasaoka |
| 5− | Kagawa | Takamatsu, Shōdoshima, Mitoyo, Kanonji, Higashikagawa |
| 5− | Hiroshima | Fukuyama, Shōbara, Ōsakikamijima, Kure, Fuchū |
| 5− | Tokushima | Tokushima |
| 5− | Hyōgo | Awaji |