More moderately, as the game is currently limited to about 130mph winds, just put a 130mph down draft at the edge. Other than the Me163, which for other reasons is never used for off map expeditions, no aircraft in AH can climb at even 60mph upward and would be forced down. The down draft might tear off wings for some aircraft, but for others it would simply be a warning to get back in bounds before your Bf109K-4 or Ki-84 is forced into the ground.