Tsunami made a great disaster in northern Japan. The destruction of Japan resulted in great economic meltdown of the country. Major disasters always require a huge amount of international support to provide relief and long term recovery efforts.
The report explains that it will take years to recover from the economic meltdown in Japan.

Predictable tsunami warning systems rely on estimates of an earthquake’s magnitude to determine whether a large tsunami will be generated. Earthquake magnitude is not always a reliable indicator of tsunami potential, however.

March2011: Incident of quake (8.9-magnitude) in Fukushima, Japan on March 11, 2011 caused more than 10 thousand casualties, which is next to World War II for the country. Incident of quake (6.8-magnitude) in Myanmar (Burma), Thailand & China on March 24, 2011.

Review on April 17, 2011: Incident of mild to moderate quake along with tsunami is possible within the span of April 23 until May 3, but degree of devastation will be much lower than the incident happened on March 11, 2011 in Japan.