# How fast does a tsunami travel?

In the deep ocean, a tsunami is about as fast as a jet airplane, traveling around 500 miles per hour. In the very deepest parts of the oceans, the speed can be over 700 miles per hour.

Another popular question is “How fast do tsunamis travel on average?”.

This is what I ran into. tsunamis travel approximately 475 mph in 15,000 feet of water. In 100 feet of water the velocity drops to about 40 mph. Did you know…A tsunami travels from the central Aleutian Islands to Hawaii in about 5 hours and to California in about 6 hours, or from the Portugal coast to North Carolina in about 8.5 hours.

How long does it take for a tsunami to travel?

Tsunami waves can travel up to 800 km/hr (the speed of jets!) in deep waters and become slower at shallow depths. If you lived in Chile and an earthquake produces a tsunami just offshore, then the tsunami could reach the coast of Chile in just 15 to 30 minutes.

What is the fastest a tsunami can go?

If you are at the beach, immediately move inland or to higher ground. If your boat is in deep water and offshore, maintain your position. If your boat is berthed or in shallow water, secure your vessel and move inland or to higher ground. If you are on the coast and cannot move inland, seek shelter in the upper levels of a stable building., and more items.

With wave speeds that can reach as much as 435 miles per hour, a tsunami can travel as far inland as 10 miles, depending on the slope and the shape of the shoreline that it is traveling across. Ships traveling in the deep ocean may pass over a tsunami and not even notice it because a tsunami can cause the waves to be as little as 2 feet high where the water is very deep.

## How long does it take for a tsunami to form?

It really depends on where the earthquake or event to trigger the tsunami has occurred and where it is heading as Daniel pointed out. Anywhere from 10s of minutes if near the coast of a continent and up to 24 hours.

## How do you calculate the speed of a tsunami?

Tsunami speed can be computed by taking the square root of the product of the acceleration of gravity, which is 32.2 feet (9.8 meters) per second squared, and water depth. In 15,000 feet (4,600 meters) of water, this works out to almost 475 mph (765 km/h).

Scientists are able to calculate arrival times of tsunamis in different parts of the world based on their knowledge of water depths, distances, and when the event that generated them occurred. A tsunami may be less than a foot (30 centimeters) in height on the surface of the open ocean, which is why they are not noticed by sailors.

## How do tsunamis happen?

Unauthorized use is prohibited. National Geographic News looks at how the killer waves are caused, what the warning signs are, and how to respond when a tsunami threatens. A tsunami is a series of great sea waves caused by an underwater earthquake, landslide, or volcanic eruption.

This of course begs the inquiry “What is a tsunami?”

A tsunami is a series of extremely long waves caused by a large and sudden displacement of the ocean, usually the result of an earthquake below or near the ocean floor. This force creates waves that radiate outward in all directions away from their source, sometimes crossing entire ocean basins.