Wind Slabs building on Crater Crest

Toured up the north face of Crater Crest today. Skies were thin overcast with some clearing in the afternoon. Temperatures were warm. Winds were increasing through the day with some strong to extreme gusts out of the SW at ridge top in the afternoon. Significant snow transport was observed near and above tree line with the increasing winds. Our tracks were quickly filled in.  Small new wind slabs were beginning to form in loaded spots. Wind slabs were only a couple inches thick and remained isolated during our early afternoon descent, however they were growing and already producing some shooting cracks. Where wind slabs weren't forming, the snow felt settled and stable. Down below tree line the recent snow was wet on northerly aspects in the afternoon. We observed natural rollerballs and intentionally triggered some very small loose wet "pushalanches" in the recent snow in steep terrain during our afternoon descent.