Coloured Sky, Arizona

Sky Colours, Arizona Sometimes coloured patches appear in the sky that are unlike 'ordinary' rainbows in shape. Jodi Moses caught this from Taylor Arizona looking East towards New Mexico late afternoon in July '06. ©Jodi Moses, shown with permission.
Why an odd coloured patch?

The sun was ~30° high and the antisolar point, opposite the sun, was to the right of the image. If there had been rain nearby, a whole rainbow would have been seen roughly along the coloured lines. Instead, the rain shower was far away and falling in slanting streaks. Where the rain was at the correct angle to the sun (i.e on the rainbow cone) it lit up in rainbow colours. The patch has a vertical appearance because the eye is guided by the near vertical rain streaks.