Is there a safe limit of wind speed for the antenna to be exposed?

There is a station in PATAGONIA where the winds are quite regularly 100km/hr.  

The antennae itself is not impacted by wind, but if you are in a high-wind location secure it extremely well.  The general rule of thumb is that the antennae mount can hold your body weight!  Millimeters of motion matter, the more secure the better.