Blackbeard said..
Also need to consider turbulence and how solid objects ie landforms, trees, buildings and sand dunes effect turbulence on both the upwind and downwind side of the object. The effect increases with windspeed.
This ^. plus flying a kite overpowered in gusty conditions.
Down wind objects, hills, cliffs buildings can change the create updrafts.
Approaching fronts can have updrafts aswell. The top hat video is an updraft. Don't believe the wind will allways go straight.!...
Infact you should never consider a lofting is not possible... it is all ways possible.
I have been lofted once this year. on my little 6m!!! luckily for me I launched, held the kite low and trimmed until I got to the water. untrimmed for the water start had the kite at the zenith and bam. Up I went and down wind at warp factor 9. It was above water so I just flew the kite like I was jumping and splash landed. But it would have friggen hurt if it was on land.
Oh yes that day was a 35-45 knot day with gusts higher.