The answer to 'why is my flashing wind damage' is that flashing is a common point of failure during high winds. Flashing is the thin metal or plastic material used to seal roof edges, chimneys, vents, and other penetrations to prevent water leaks. When exposed to strong winds, the flashing can become loosened, cracked, or even completely torn away from the roof.
The most common symptoms of wind-damaged flashing include visible gaps or openings around the flashing, water stains or leaks in the home, and the flashing itself being bent, twisted, or missing. This can allow water to infiltrate the roof system and cause interior damage.