We started out from the North Rim of the Grand Canyon this morning around 8:00 a.m. The sun was shining, so bright I had to wear shades:
Going across Marble Canyon, the sun was still out, but we could see the clouds building up as we went along:
When we turned towards Flagstaff on Highway 89, the coulds started looking dark, heavy, and omnious:
The farther we went, the darker the clouds got. We could tell it was going to rain soon:
When we got to Gap, Arizona, we could see the rain falling from the sky across the desert:
And when we stopped for a potty break, the bottom fell out while we were in the store:
It rained on us almost all the rest of the way to Flagstaff, and has continued to rain all afternoon and most of the evening. Who said it never rains in Arizona???

Wow, that was a lot of rain. Did you see any flash flooding in the desert?
Nice series of pictures leading up to that last one, too!
I watched that storm all day from various viewpoints. Your shots are great. Try to stay dry.