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The velocity of the compression wave in open (deep) water is aboooout 700 km/h (400mph). Divide the distance from the epicenter of the phenomenon generating the tsunami to the shore by the speed and you get the time.

When the wave nears the shore and the water depth decreases, the speed of the wave slows and its height grows, so add a few dozen seconds before the shore is inundated.

It takes about 2 minutes 24 seconds in most certain but not exactly that much.

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13y ago
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9y ago

It depends on what portion you're crossing. To go between the west coast of North America to Japan, for example, would take about 10 hours. To go between Japan and South America, 20 to 30 hours.

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14y ago

It depends where it started, and how deep the water was there.

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12y ago

15 minits

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Q: How long does it take for a tsunami to get to land?
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