" You can establish margins, but Mother Nature at any time
can blow right through them and put you into a totally
new aerodynamic situation.

Margins are not static, and need to be adjusted for Mother Nature.

Margins on a clear, light wind day differ greatly from those on a day with, e.g., thunderstorms in the vicinity. "

Question: With a windsock showing 8 kt and wind of 15 kt at 300' on a cross country day, how much provision should be made for possible windshear?


After some answers have been submitted, I will share the windshear I once encountered in these conditions.