Fire rainbows aren't actually rainbows and they have nothing to do with fire, either. Technically known as circumhorizontal arcs, these optical phenomena occur when the sun is higher than 58° in the sky. The other ingredient forming these arcs are cirrus...
Fire rainbows aren't actually rainbows and they have nothing to do with fire, either. Technically known as circumhorizontal arcs, these optical phenomena occur when the sun is higher than 58° in...
