A 6.2-magnitude earthquake rocked central Japan early on Saturday night and was even felt in Tokyo.
The earthquake struck at 10:08 p.m. local time Saturday (8:08 a.m. EST) about 16 km (10 miles) north-northeast at Omachi, Japan, according to the U.S. Geological Survey (USGS).
The location of the epicenter is also 24 km (15 miles) west of Nagano.
The USGS ShakeMap indicates that very strong shaking was felt in the vicinity of the epicenter, leading to the potential for moderate damage.
There have been no immediate reports of damage or injuries.
Residents have reported to the USGS that weak to light shaking was even felt in Tokyo, which is 191 km (119 miles) to the southeast of the epicenter.
This is a breaking situation and AccuWeather.com will continue to update this story as information is received.