My impression is that Europeans generally don't know what real severe weather is like. A hurricane that happens to hit close to a population center while it has a strong eyewall is incredibly devastating. Think of it like a tsunami, windstorm, and a family of tornadoes all at the same time.

The wind will knock down trees which crash into houses, block roads, and take down power lines. That alone means most of your human infrastructure is gone. Ambulances cannot reach you, you cannot get out, it's dark, communication technology stops working, you may be overheating without air conditioning, food quickly starts spoiling.

I lived in Orlando when Hurricane Charley hit. Thousands of giant live oak trees were blown over. The drive from my house to my girlfriend's normally took ten minutes. After the hurricane, it took me over an hour to get there because I had to contend with billboards in the road, downed power lines, and enormous trees blocking roads everywhere. Many places were simply inaccessible.

If you are close to the coast, add a storm surge to that. Mass flooding surges through neighborhoods. A tide of opaque, dirty, water containing all manner of dangerous debris. Roads are washed away, houses collapse. People drown. During Hurricane Katrina, a common failure mode was people who climbed into their attic to escape the rising floodwaters, only to get trapped in there and drown when the water level reached the attic itself. (Since then, New Orleanians learned not to go into your attic during a flood unless you bring an axe to chop through the roof.)

Most hurricanes are not this bad. They lose energy quickly when they make landfall and their strength diminishes with distance from the center. But there are half a dozen hurricanes every year and when you throw that many darts at the Gulf coast, eventually some of them will hit.

Its kinda of a prisoners dilemma but at a larger scale.