An earthquake with magnitude 7.3 occurred near Sendai, Honshu, Japan at 08:18:20.00 UTC (03:18:20 EST) Friday December 7, 2012, according to the U.S. Geological Survey.

Japan earthquake tsunami warning issued — BBC at 04:23 EST

AP news: The Pacific Tsunami Warning Center said there was no risk of a widespread tsunami. … There were no problems at any of the nuclear plants operated by Fukushima Dai-Ichi operator Tokyo Electric Power Co., said a TEPCO spokesman.

One-metre high tsunami hits Japan after earthquake — BBC

Strong earthquake strikes Japan, tsunami warning lifted — Washington Post