My guess is about 12.
Earthquake than tsunami
The effect we now call tsunami has been happening since there have been oceans on the planet Earth (billions of years). There was no "First Tsunami"; the Japanese have been calling the effect 'tsunami' for many centuries.
It is impossible to predict when a tsunami will occur until it actually starts.
California California
A tsunami happened during the Indian Ocean tsunami in December 24 2004
no but your mom can
An earthquake happened, which triggered the tsunami.
The tsunami of Sumatra happened on December 14, 2004.
No. The tsunami did reach California and caused some damage there, but tsunamis do not affect weather.
It happened at 11 March 2011.
It is impossible to predict when a tsunami will occur until it actually starts.