What's the worst storm you have been in while camping?

Worst was not a storm in the traditional sense. Not even cloudy. But an unusual weather system caused extremely high winds at an RV park in southern Colorado. RV park told everyone in an area containing a lot of very tall spruce trees to move to the other end of the large park. Good thing. 8-10 large trees were blown down and would have crushed several rigs. Only casualty was a new Dodge (yes they were still Dodge then) dually had a tree fall directly on the cab and crush it flat to the window sills.