-Does the palisade value ever decrease in value from the storm clouds dice value? Does it generally decrease by 1 due to a storm token?
-What does the palisade value generally, usually, defend against? What other things can it defend against?
There is no "storm dice" in the game.
During weather, Palisade only decrease by 1 if storm token is on weather space, or if the Hungry animals (red) die shows the corresponding result (decrease by 1 also).
Palisade mostly protects against Hungry Animals die, some Beasts as well (when Hunting, some decrease Palisade), and other events or adventures effect...