Yea, they go in cycles. Some used to say the winter would be messured by the acorn size. I had a tree over my driveway in nj. Mostly not an issue. One year it dented the crap out of my new car. Next year, no more tree. I figure about every 15 years or so they get giant acorns. Had the tree for like 40 years. I will never have another one on my property. At leat not near my house , cars, driveway of kids.