There’s a large but relatively weak cutoff low pressure system approaching the West Coast, which has some potential to make our weather spotty for the next three or four days. That’s the thing with cutoff lows – most systems, high or low, get carried along with the jet stream and keep moving, more or less east to west. (I say “more or less” because it’s not terribly uncommon to get weather maps that look like this, and there you’ll have significant north/south components to the motion in addition to the generally easterly direction.)
But tonight, about an hour before sunset, these waves (and they really are caused by ripples in the atmosphere) of puffy clouds were moving through.
I had been hoping for a spectacular sunset, but in the end we just got a tinge of pink at the last moment.