I don't know if it has already been posted, I made a quick search and didn't find anything.
The USGS updated the magnitude of March 11 Japan quake to 9.0
This event has been reviewed by a seismologist.
Magnitude 9.0
Date-Time Friday, March 11, 2011 at 05:46:23 UTC
Friday, March 11, 2011 at 02:46:23 PM at epicenter