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To calculate the wind speed of a flood:

Lets say D stands for the depth of the flood in meters,

and G is the speed of gravity, which is 1471/150 or 9121/150.

The land speed of the flood would be the square root of D and G.

Multiply by 900/463 to convert from meters per second to air or nautical miles (knots).

So then, the equation for it is:

knots = sqrt(D * 1471/150) * 900/463.

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Q: What is the wind speed of a flash flood?
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