A deep earthquake registered by the JMA as M6.1 hit off the west coast of Ogasawara Islands, Japan at 04:49 UTC on January 16, 2023 (13:49 LT). The agency is reporting a depth of 400 km (248 miles). The USGS is reporting M6.3 at a depth of 405 km (252 miles).
The epicenter was located about 617 km (384 miles) SSE of Shingū, Wakayama, and 634 km (394 miles) S of Shimoda, Shizuoka, Japan.
The USGS issued a Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.
Overall, the population in this region resides in structures that are resistant to earthquake shaking, though vulnerable structures exist. The predominant vulnerable building types are heavy wood frame and reinforced/confined masonry construction.
There is no tsunami threat from this earthquake.
Regional seismicity
