Residents of Douglas in Arizona have been treated to a rare and stunning phenomenon - fire rainbows.
Caused when ice crystals splits sunlight into different colours, they cause the sky to flicker with colour.
Brandon Rios, who captured the amazing images with his father, said he was 'completely astonished' by the phenomenon.
The clouds are seen several times a year in the US, although they are rare elsewhere in the world.
Fire rainbows, known by the proper name of circumhorizon arc, occur when cirrus clouds are far enough up in the air to form plate-shaped ice crystals.
They are not actually rainbows, but a halo effect, although they are commonly referred to as fire rainbows.
When the sun is at the right angle it hits the top of these plates and splits into different colours that are viewable on the ground.
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