Quote:
"It's not the cross wind that's the problem, it's the associated turbulence."
Agreed, Bergerie 1, and ZeBedie is right: the surface winds cannot possibly be judged from the video. In any case, the wind reported by ATC to an a/c on very-short finals is not going to be mirrored over the runway threshold.
The other problem with these smaller, non-jet a/c is that their relatively low approach speed results in a very high drift-angle for a given crosswind component. So de-crabbing before touchdown is a big deal. It's 45 years since I flew high-winged turboprops, but the standard crosswind technique in my day - and we got plenty of practice in the Channel Islands - was the sideslip. (For the non-pilots, the upwind wing is lowered, using aileron, while opposite rudder is applied to stop the a/c from turning. The object then is to adjust the amount of bank and rudder so as to have the a/c pointing straight at the runway, without crabbing in the crosswind. This means that there is little or no drift to correct before touchdown, and the high wing allows you to land the upwind main-wheels first without risk of striking the propeller blades or wingtip on the runway.) The sideslip could be established well before the airfield boundary. Apart from anything else, it avoided the runway being partly obscured by the windshield frame - particularly useful in rain.
In the video, the crosswind is from the left of the runway. None of the a/c has lowered its left wing before touchdown, and some seem to have suffered a gust-induced roll to the right in the final stages. They all touchdown with a considerable amount of drift on a dry runway, and in one case well downwind of the centreline. Sorry to say it, but the six "P"s come to mind...