TOKYO, Dec. 7 (Xinhua) -- A 7.3-magnitute earthquake jolted off the east coast of Honshu, Japan, resulting in a tsunami warning for the country's northeastern coastal areas, according to Japan Meteorological Agency (JMA).
The quake occurred at 5:18 p.m. local time Friday (08:18:24 GMT) . The epicenter was initially determined at 37.8 degrees north latitude, 144.2 degrees east longitude, with a depth of 10 km, the JMA reported.
The tremor was followed by a 6.2-magnitute aftershock off the east coast of Honshu, at 08:31:14 GMT, the U.S. Geological Survey said.
The epicenter, with a depth of 29.20 km, was initially determined to be at 37.9387 degrees north latitude and 143.7626 degrees east longitude.
A warning for a two-meter tsunami was issued for the coast of Japan's northeastern Miyagi Prefecture. Injuries and damages are not immediately known.
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