I have plans to do some of these into pastels at some point, probably as larger paintings, but couldn't resist doing one as a small 5x7. That is also when I discovered that my pastel palette is a bit lacking in the appropriate sunset and greys necessary to do the types of skies and clouds I wish to paint.
For now, here are some photos and one pastel of the evening clouds from that evening. I've also included the reference photo I used for the painting.
Cloud Cover to the East
The evening light highlights the interesting projections from this receding cumulonimbus.
Winter Evening Glow
These clouds cast a beautiful coral and peach glow to the southeast.
Three Pink Clouds
This trio of cumulus, with small trails of icy virga, are over the southern-most hills of the Mules.
"Three Pink Clouds" - 5x7
pastel on sanded paper
Sunset along Hwy 80
Bright headlights of cars heading towards Bisbee contrast with the darker land and softer colors of the sky.