Warns you what storm is coming, and when. If it makes a chirping kinda noise to the sky, it's a sandstorm. If it tries to bury it's head in the ground and shakes it's head, it's a superheat. If it shakes it's tail and growls, lightning storm.
DO NOT believe that this reduces weight on its inventory. As of today AUG 2020 I tested stacks of meats and berries etc, IT DOESNT. But instead it increases spoil timer of foods, meats and berries on its inventory. ⬆️ to prevent ppl from false informations!