It occurred on the 11th of March (2:46) PM Local Time.
The Earthquake occurred before the tsunami as it is what caused the tsunami.
The tsunami in Japan occurred because when the tectonic plates under ground move they cause an earthquake. Sometimes an earthquake can cause a tsunami from shaking underwater.
Once the earthquake that triggered the tsunami occurred, authorities knew that a tsunamis was likely. Prior to the earthquake there was no way of predicting it.
On March 11, 2011, a magnitude 9.0 earthquake occurred near the east coast of Japan, which triggered a massive tsunami. UPDATE: Official magnitude was updated to 9.1 on Nov 7, 2016.
Recent natural disasters: Hurricane Katrina, Tsunami in Indonesia, Earthquakes in Haiti and Chile.
A tsunami hit japan after the earthquake.
The earthquake occurred at 14:46 JST (05:46 UTC) 11 March 2011, which triggered the tsunami. This tsunami hit Japan only a few minutes later.
The earthquake occurred at 14:46 JST (05:46 UTC) 11 March 2011, which triggered the tsunami. This tsunami hit Japan only a few minutes later.
Tsunami occurred on 11 Mar,2011
Japan was effected strongly by the earthquake that hit Japan on the 11th of March 2011. Many lives, jobs, buildings and homes were lost. A tsunami also occurred because of the earthquake. Nuclear power plants suffered from leakage, and the radiation still needs to be completely cleaned up.
Japan had Tsunami and an Earthquake Kansas had an earthquake
If you mean how then here it is because the earthquake might of happened in the sea and went to japan and then the earthquake was strong enough to make a tsunami