Getting to higher ground, taking any important documents (birth certificates and a photo album). Apart from that, there is very little you can do except hope it isn't big enough to destroy your home.
There are not any precautions that can be taken against a tsunami.
When a Tsunami occurs dig big pits near the sea shore as the speed and the quantity of water will get reduced.
The Earthquake occurred before the tsunami as it is what caused the tsunami.
Taking or using precaution; precautionary.
Precaution
The last major tsunami before the 2011 Japan tsunami was the 2004 Indian Ocean tsunami, which struck several countries bordering the Indian Ocean on December 26, 2004. This tsunami resulted in significant devastation and loss of life across the region.
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Yes, a small shift underwater is the cause of a tsunami.
store water.
As a precaution.
Whatever it was before it hit, a tsunami has no effect on climate.
Backups!