Famous last words from a coastal resident who thinks their house can withstand the most powerful force on Earth........ Water.
My grandaddy used to say, "fire is a bad powerful thing, but water will put fire out".
Lemme put it in perspective for our Florida neighbors.
A gallon of water weighs 8.34lbs. there are 7.48gal of water per cubic foot.
Let's say the surge is 5ft high, for every 1ft square x 5 foot deep= 311lbs
Now let's do some serious math...
So your house on stilts is 8' off the ground, the storm surge ends up being 9' high.
Let's say your house is 30' wide, that's 1872lbs laying against your house. But wait...there's more!
Now let's factor in a 1fps motion to that water, relatively tame for a tidal flow. Now you have 1872lbs per second hitting your house. The bad news is it's geometric at that point, tons upon tons of force.
I haven't worked the calculations on force in years. All I can tell you is it's gonna be catastrophic force.
Water is incredibly heavy, heavier than folks ever really think about. Add flow( surge) and it can move mountains. And we haven't even factored in the wind yet.
If Irma poleaxes the keys, the destruction will be apocalyptic. I might be wrong. I tell you this, I wouldn't want to see it from my bedroom window. I'd be scared poopless in the NOAA bunker.
They were interviewing the guy in KW at the weather station there. He looked nervous as heck.