After Hurricane Andrew in the early 90s, Florida significantly modified their building codes, as it caused significant property damage, especially in the Miami area (the new code is often referred to as “Miami-Dade”). Structures built to the new code are essentially all reinforced block exterior walls (even single family houses) with impact resistant glass, and are much more structurally robust than you would see in just about any other part of the country. I don’t recall the exact specified numbers, but the requirements should mean a structure can withstand some fairly significant hurricane strength winds. From what I can tell in a lot of the pictures of damage, you’re seeing mostly older, wood framed structures (or mobile homes) that were built to the old code.