Personally, no. However a neighbours shed burned due to damp hay. They had a choice, bale damp and green and risk fire or get drowned for the next three days. The forecast turned out to be right. BUT they lost the gamble as the hay cooked up and caught fire and destroyed the shed(1/2 round steel frame/corrugated iron cladding). At least there was only 400 bale in there. The shed could take 1200 bales.