Magnitude 6.4 Date-Time Saturday, July 23, 2011 at 04:34:24 UTC Saturday, July 23, 2011 at 01:34:24 PM at epicenter Time of Earthquake in other Time Zones Location 38.953°N, 142.019°E Depth 35.7 km (22.2 miles) Region NEAR THE EAST COAST OF HONSHU, JAPAN Distances 112 km (69 miles) SE of Morioka, Honshu, Japan 125 km (77 miles) NE of Sendai, Honshu, Japan 165 km (102 miles) ENE of Yamagata, Honshu, Japan 414 km (257 miles) NNE of TOKYO, Japan Location Uncertainty horizontal +/- 15.6 km (9.7 miles); depth +/- 6.5 km (4.0 miles) Parameters NST=453, Nph=455, Dmin=354 km, Rmss=1 sec, Gp= 47°, M-type=teleseismic moment magnitude (Mw), Version=A Source Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D) Event ID usc000531r