in damage. >> even a category 1, we don't want to get caught up in the numbers. yes, a 5 is a much stronger one than a 1, but even a 1 can do damage. a hurricane is a hurricane is a hurricane. prepare for all of them. >> reporter: this man created the wall of wind which can simulate a monstrous cat 5 storm. when we're talking category 1, the concern is not really the power of the wind but debris flying off. >> it is a multipronged attack. the wind can do destruction. but it's what you put in the wind. flying debris, anything coming into the structure can damage it. >> reporter: we latched a camera to the roof of one of these huts. you see the rain pounding, shingles curling around it. before it's sent airborne, turning into a potentially deadly projectile. even a small hurricane of a category 1 can cause catastrophic damage. and one little factoid i was