I lived Full Time in a 10ft caravan on a site with an awning. The awning was the kitchen area with pallets as the floor. It just takes a push on the canvas to clear the snow every now and again. The awning will only last a year doing this, as it never dries out in the winer and mildews. These little spots perforate the material and come spring you have a wonderful stary night view when it is light from inside. It still kept the rain out though.
I have had the same thing as in the pictures happen, when a wind suddenly got up while I was out, on another outfit. This time it was a 16ft van.
It can happen to us Motorhomers as well. We were at Tan Hill in the quarry with the Safari Room out. Gentle breeze when we went to bed. The wind got up suddenly and it took the whole lot over the top of the Hymer at 2am. We had used rock pegs to anchor it as well.
Before
2:00am
6:00am
6:00am There was an awning canopy on here whem I arrived.
The satelite dish didn't fair very well either the 1" drive shaft inside snapped.