Winds above 300 mph have already been clocked in multiple Hurricanes especially in from the Philippines on into Asia

 So, when I speak of 300 to 500 mph gusts of wind I'm not being unrealistic at all because over 300 mph winds have already been clocked here on earth though as of yet not the 500 mph gusts at least at ground level. However, it is likely there have already been 500 mph gusts of wind at alititude above the altitude of mountains around the world.

So, it is only a matter of time before 300 to 500 mph winds (gusts or full on winds) become more and more normal this century in various ways like hurricanes, Tornadoes and such worldwide.