- A 6.4 magnitude earthquake struck off the coast of Japan early on Monday, the U.S. Geological Survey said. The epicenter was 72 miles southeast of Morioka on Japan's Pacific coast, the USGS said, updating an initial report that said the quake was of magnitude 6.3 and 95 miles off the coast. Magnitude 6.4 Date-Time Sunday, June 17, 2012 at 20:32:20 UTC Monday, June 18, 2012 at 05:32:20 AM at epicenter Time of Earthquake in other Time Zones Location 38.894°N, 141.946°E Depth 31.8 km (19.8 miles) Region NEAR THE EAST COAST OF HONSHU, JAPAN Distances 113 km (70 miles) SE of Morioka, Honshu, Japan 116 km (72 miles) NE of Sendai, Honshu, Japan 157 km (97 miles) ENE of Yamagata, Honshu, Japan 405 km (251 miles) NNE of TOKYO, Japan Music: Sinner DC and Sonic Boom - Showdown Aorta