As we were taking our evening stroll Damsel and I were watching the sky since there were still a few isolated thunder cells around us. There were a few raindrops falling from a small cloud overhead and a rainbow was partially visible almost straight up.
In the distance east of us (seen in the image), we observed a few lenticular (altocumulus lenticularis) clouds in the lee of the Bradshaw and Weaver mountain ranges to the north of us. The flow (as observed from our position on the ground and on radar on the computer) was from north to generally south.
We also observed what appeared to be some commercial air traffic being diverted from (my guess based on the direction of travel) Phoenix Sky Harbor to McCarran Las Vegas due to a large cell in the Phoenix Metro area. I feel for the crew and passengers on such flights for (a) the inconvenience of the diversion and (b) the turbulent ride they certainly would encounter under the observed conditions.