It is very rare to see a rainbow in the desert according to the people the U.S. Grains Council Corn Mission team was meeting with at the time.
We were on location at the water buffalo feedlot and dairy when we saw this storm on the horizon. It arrived just as we were ready to leave and this was what we saw. It also poured rain as we drove away. In fact, as the storm moved over us the rainbow moved all the way through a full arc but never made a complete arch.
We took it as a good sign. Those are pens in the foreground with baby buffalo in them. There are additional photos of the buffalo and the rainbow in the photo album.