[southernnorthcarolina]

The power in wind increases cubicly with the velocity not to the square.

It does? Hmmm. Thanks for the correction. I knew the relationship was geometric and not linear.

Actual damage, as opposed to measured wind pressure, probably shows an even sharper upward curve as wind speeds increase. I wouldn't be surprised if damage in $$$ terms is 2x or 3x as high at 120 mph than at 100 mph.

[biblewonk]

Your welcome, it makes perfect sense if you think about it. We know that an object in motion's kenitic energy is expressed as 1/2mvsquared. Think of wind as a bunch of particles. If you double their speed you quadruple the kenitic energy in each particle, BUT you also double the amount of particles hitting an object in a given amount of time, hence cubing the overall energy delta.

I'm a physics/windmillwonk in my spare time. :-D

[Vinnie]

Formula for wind pressure

P = K x V sq.

K = .004, over 100mph .005