Latest information from USGS shows the earthquake has a depth of 54 kilometers (34 miles). CNN teams in Tokyo felt the tremor.
A tsunami warning was issued earlier Saturday but has now been downgraded to a “tsunami forecast” of slight changes in sea level, a Japanese government website showed. The US Tsunami Warning System says there is no warning, advisory, watch or threat of tsunami associated with the Japan quake.
More than 100,000 people were evacuated and authorities have spent the past 10 years cleaning up the area — a massive effort that experts say will take decades to complete.