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# How fast do tidal currents move?

Updated: 8/9/2023

Wiki User

13y ago

It depends on the depth. On deep oceans it can hit 500 mph. Near the land it slows down to 20 or 30 mph.

http://www.publicaffairs.noaa.gov/grounders/tsunamis.html

It is important to note that the 500 mph is simply a theory, there is no method to truly measure the speed of the wave. Also, if you follow the above link it explains that when the tsunami approaches any land it slows to 20-30 mph. This would even further refute the 500 mph.

Wiki User

14y ago

Wiki User

13y ago

yes they do and there strong

Thanks to Glenn Elert's online Physics Fact Book:

"The maximim for the Gulf Stream is 2.5 meters per second on the surface and 0.02-0.10 meters per second in deep water."

Wiki User

13y ago

Tidal currents move at 1 knot... which is equal to 1.15 miles per hour....

Wiki User

10y ago

In deep ocean water, a tsunami can move at about 500 mph. When they get into shallow water they slow to 50 mph ot less.

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