They say a picture is worth a thousand words and in the case of the Tsunami that hit the coast of Japan could not be more true.
Earth Satellite NASA planet orbiting at an altitude of 705 km was able to capture in detail the level of flooding from the entrance to the sea coast, specifically the region of Sendai where they would have generated the most damage.
In the second picture accompanying this note can be seen the same region but in a photograph taken on 26 February, to have a benchmark of the extent of damage caused.