High winds are the only danger presented by weather. The only real issue would be storing your Windfeather® wet as this can lead to color bleeding in the nylon and mold. Note the dye sublimation colors will not bleed or transfer after being heat set.
There is the possibility that some dry ink may transfer but this can be washed off or will self clean in the rain. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.