It varies on the distance from land that the earthquake struck (causing the tsunami waves.) Tsunami waves can hit for a few minutes or hours.
The tsunami that struck Japan after the Sendai earthquake in 2011 lasted for an hour.
See related links for more information.
an hour
^^^
original answer above.
The duration of a tsunami depends on the strength of the cause (most likely an earthquake) The larger the quake, the stronger the wave, the larger the wave.
Any tsunami worth monitoring duration would most likely hit land first. Tsunamis have been recorded to go for up to 3 and a half hours.
It depends on how big the Tsunami is. Some last 30 minutes, others can last for anhour or so. But no matter big/small the Tsunami is, there will always be some form of a devastation that follows.
a tsunami can last for 1 day up to 2 weeks
Tsunamis consist of more than one wave. This being the case, tsunamis can last for many hours. Sometimes, large tsunamis can last for days.
Tsunami occurs untill the earthquake occurs in a place a region or a country
It can last up to 1 or 2 hrs.
the max is several days
Tsunamis can reach up to 1,759 feet
http://www.prh.noaa.gov/ptwc/faq.php#9
Nobody knows. Yet.
The last tsunami before Japan was in New Zealand.
were and when was the last biggest tsunami
From when the tsunami hit land to when it slowed and started to retreat was about an hour, as was reported anyway.
1 hour 33 mins and 56seconds
the Asian tsunami lasted 10 minutes
4min 24.29sec
Nobody knows. Yet.
about two months i think
Go Find it out yourself. Jeez
The last tsunami before Japan was in New Zealand.
were and when was the last biggest tsunami
The earthquake that caused the tsunami was on the same day, 29 September, 2009.
From when the tsunami hit land to when it slowed and started to retreat was about an hour, as was reported anyway.
1 hour 33 mins and 56seconds
last year
The last Tsunami in Washington was on March 10, 2011. The tsunami originated of the coast of Japan. While there was not much coastal flooding, some boats and docks were damaged.