In reply to Andy Clarke1965:
I'm just back from Nepal, having been looking across at Annapurna from a unique (though unfortunately far too low) viewpoint and talking to some of the Himalayan Database people. There is no questioning of Steck's climb.
I don't want to put words in anyone's mouth, but apparently Ueli is quite open about getting once-in-a-lifetime conditions on the route - which were completely changed just after, when the French went up. Ueli reported good firm snow cover over some of the rock section up high, which was significantly thinned by the time the French got there.
September was good and clear up high, plenty of summits on the 8000ers and the start of October was good also, when Ueli climbed. Then those big cyclones south of India ramped up and around Oct 11th sent waves of cloud and precip north up to the Himalaya. It was already a 'late' monsoon then the storms happened. Places in the Khumbu got metres of snow and people died. Where I was, north of Dhaulagiri, it was mostly just crap light snow and rain, no big dumps.
Through the middle of October right up to the end me and my partner could look across and see the summit of Annapurna (actually the top of the NW face/ridge) beyond the Nilgiris. I remember thinking, as waves of cloud and wind piled up against the south side of the massif, that I would not want to be up there and could not imagine anyone was - but the French were. We chuckled about how Ueli had timed his climb just right.
My diary shows the weather clearing up noticeably on 22nd October, like a switch had been flicked. It also got noticeably colder and windier almost overnight and it is around this time the French were descending. I've not seen any photos from their climb, but I can't imagine they got many nice views. From what we saw it looked like they would have been climbing in constant cloud and generally poor weather.