In addition to tsunami alert messages issued by warning centres and national authorities, tsunamis may be accompanied by natural warning signs and recognizing any of these signs could save your life!

FEEL
Big local earthquakes can cause tsunamis
FEEL the ground shaking severely or for a long time? 

SEE

SEE an unusual disappearance of water, or an oncoming wall of water?

Tsunamis may be preceded by a rapid fall in sea level which exposes reefs, rocks, and fishes on the bottom of the sea as the ocean recedes
Tsunamis often come ashore as a wall of water, and quickly flood inland.SEE an unusual disappearance of water, or an oncoming wall of water?

HEAR
Abnormal ocean activity, a wall of water, and approaching tsunami create a loud "roaring" sound similar to that of a train or jet aircraft
HEAR the roar?

RUN
Don’t wait for official evacuation orders as there may not be enough time
Immediately leave low-lying coastal areas
Move inland to higher ground
RUN if you see a tsunami coming!

Source: CDEMA, 2010