Here is the same cloud formation a little later that evening one year ago, and it did prove to be a harbinger. View attachment 147751 I skied the next day, and several times thereafter. View attachment 147752
Some fine lenticular cloud formations.
Used to fly hang gliders so have a special interest in these types of clouds. They are an indicator of wave and hence some interesting lift conditions towards the leading edge and also some even more "interesting" turbulence after the trailing edge.
Pilots in sail planes in New Zealand have used wave to soar to in excess of 40,000 ft.