tl:dr Watch the second or third video first.
The plan was to post a time lapse video of our Irvine sky today. Disappointment. The movie was blah.
I looked more closely.
A few atmospheric features you don’t usually see showed up. Very cool.
In these movies you’re looking northeast. There’s a ridge line, then mountains around 12 miles away. When the direction and altitude are right, mountains cause turbulence, The smooth flow of the atmosphere is disturbed. Standing waves form.
The next thing you know you get lenticular clouds. They are lens shaped and virtually stationary. Without time lapse you might not realize they’re there.
Below you’ll find the full sky time lapse and two ‘zoom ins’ where you can concentrate on just the clouds. Enjoy!