Mountain wave clouds over my city today.
What causes mountain waves?
These waves are generated when strong winds flowing toward mountains in a generally perpendicular fashion are raised up over the mountains. As the winds rise, they may encounter a strong inversion or stable air barrier over the mountains that causes the winds to be redirected toward the surface.
Nice! Thanks for that info I live near the Canadian Rocky Mountains.
@disk4mat New Zealand is known as "Aotearoa"βMaori for "land of the long white cloud" because the Foehn winds flow off the Southern Alps creating these kinds of clouds in the Canterbury plain.