I flew in 20-30 with gusts of 40mph. In my opinion it is really pointless and stupid to fly in high winds. The video gets jerky when fighting the winds. I took the mavic above the trees and then realized the wind was pulling it away and it wasn't hovering at one spot. I steered the craft back towards my position and it was still drifting backwards. I immediately switched it into sport mode and barely got it back. As I was steering it back I kept calm and visually scanned areas to safely land it, just in case. So moral of my story is, 30-40mph is too much. Rule of thumb, if wind speed is over 20mph it's best to call it a day.