No one knows until the wind blows, huh? Where're my No Nonsense? If it's THAT windy, you can keep your strong arm against your side or button your shirt. I wear buttoned, loose, untucked sport or golf shirts, carry OWB, and have never had a problem. In SC, that used to be considered "flashing" and you could be charged for it. I believe they did away with that, and an accidental exposure isn't a violation. Your mileage may vary. If you're carrying legally, in a legal place, you should be ok.