An earthquake measuring 7.4 on the Richter scale shook northeastern Japan. Local authorities warned of the potential tsunami waves from this earthquake.
This information from the Japanese NHK television station quoted by Reuters on Thursday (04/07/2011).
In broadcasting, NHK television also appealed to local residents living in coastal areas, away from the shore and fled to higher ground.
Areas threatened by the tsunami is the area that was swept away by tsunami waves on 11 March last