Rain that fell at lower elevations yesterday and last night, fell as snow at higher elevations,
so this is what Kitt Peak looked like early this morning from 30 miles (48 km) across the Avra Valley.
The grey band across the lower part of the image is a bank of distant fog,
the dark band across the bottom of the image is the valley floor in a cloud shadow.
Very interesting atmospherics.

With 23 telescopes, Kitt Peak (6,880 ft / 2,096 m) in the Quinlan Mountains on the Tohono O'odham
Nation holds the largest, most diverse gathering of astronomical instruments in the world, many of
them just visible in the photo above. They are to the left of the highest point of the Coyote Mountains,
which from this viewpoint hide all but the summit of Kitt Peak and better seen in the 50% view crop below...

Photographed in the Sonoran Desert from west of Tucson, Arizona USA.
83552