Earth/Water Displacement

Whether it be an earthquake, land slide, volcanic eruption, ice shelf break, meteor impact…  an other natural event that causes a large amount of rock and soil to fall into or move water…  be aware that it could trigger a tsunami.

In the mid 1900s, when the government tested nuclear weapons, They would often test under water.  There are a few cases where these test went horribly wrong and sent massive amounts of water into neighboring islands.  This isn’t something that big brother does anymore, that we know of, but into times of war a missile or any some of detonation could cause the same effect.

Receding water

An unusually fast receding of the water along the shoreline is an unmistakable sign of an incoming tsunami.

People become curious and may venture out onto the shelf to explore while the water is being pulled out to sea.  However, this is one of the main causes of death is a tsunami.  Once you see the incoming wave, it is too late.

Be aware that water does not always recede before a tsnami strikes. 

Rising water

A fast, inconspicuous rise in the sea level is sure sign of an incoming tsunami.

In 40% of tsunamis, an increase in sea level will proceed the rushing wall of waves that are about to strike a region.  If the water gets to a point where it breaks the tree line or comes closer to civilization, take notice that it is not normal.  Act! 

This is most likely the first small wave of a tsunami.

Water turbulence

If you notice out of the normal sea water flowing, swirling or bubbling, this could be another indicator.  This could also create strong under tows or currents out to sea.  Be sure to stay out of the water and alert everyone around you!

Animal behavior

It is known that animals have a sense for danger.  

Before the 2004 tsunami in the Indian Ocean that killed thoudands, it was reported that dog refused to go outside, elephants ran to higher ground, zoo animals retreated to their dens and refused to come out.

I believe this is due to a spike in the Schumann Resonance that comes with an earthquake or large ground shakes.  In any case, animal behavior is something to pay attention to. 

The sound it makes

The sound a tsunami produces is describe as a low, deep rumble.  Almost sounding like a thunderstorm, train passing or jet air craft.

At night this may be your only indicator!

If you can imagine a 100ft wall of water traveling at over 100 miles per hour, I’m sure that it would sound very intense and like a wave that is crashing for minutes at a time.

The locals & sirens

Pay attention to the locals.  Listen to local officials.  Most coastal areas that are aware of a tsunami threat will have warning sirens to make you aware of a threat. 

Local fisherman and ship/boat captains know that when a tsunami is on it’s way, they should head as far from shore as possible.  If you see boats rushing out to sea in a hurry an all at once… that is a sign that.something isn’t right.

Do not depend on local indicators alone.  Know the signs!