A tsunami warning has been issued for Fukushima Prefecture
A magnitude 7.3 earthquake struck off the Fukushima region of Japan, according to the U.S. Geological Service.
The epicenter was located 231 miles east of Japan's Honshu Island. The tremor was felt 300 miles away in Tokyo.
The Japan Meteorological Agency issued a tsunami warning at 1:14 p.m. EST for Fukushima Prefecture.
"Marine threat is in place," the agency warns. "Get out of the water and leave the coast immediately."
The agency said it expects a slight sea level change in coastal regions, but no tsunami damage.
NOAA's Pacific Tsunami Warning Center said the quake was not expected to trigger a Pacific-wide tsunami and that there was no threat to Hawaii.
All but two of Japan's 50 reactors have been offline since the March 2011 magnitude-9.0 earthquake and ensuing tsunami triggered multiple meltdowns and massive radiation leaks at the Fukushima Dai-ichi nuclear power plant, about 160 miles northeast of Tokyo. About 19,000 people were killed.