What lake were you at?
We had a camper that slept 8. We used to go camping with another family that had a ski boat. We also had a sail boat. If you weren't skiing you could go sailing. We were at Sullivan Lake with this other family in the 70's.
I don't remember if it was the 4th of July or Memorial Day weekend, but the campground was so busy they mowed a field and parked the overflow in there. I was in the ski boat while my dad was skiing. I saw a tornado off in the distance. I got the attention of the person driving the boat and he made a bee line towards the bank nearest to our truck. My dad had no idea what was going on until we pointed behind him. We beached the boat, tied it to a tree, and rushed back to the camper. We got back to the campsite as the storm hit. All 8 of us sat in the camper playing 2 games of Euchre while the tornado went by.
We probably should have went to the block shower house, but we rode out the storm in the camper. You could feel the trailer lift and slam down on the jacks. I know there were injuries in the park, but we escaped major damage and injury. Curious if we were at the same place, or if it was a different lake on the same day?