You can some times see this effect in a halo around the moon on chilly foggy nights as the sun's light reflects off the moon. But I have never seen one that appears in shape similar to a rainbow. Sounds like something you would see in a horror film.
One of the few things I miss about Oregon is fishing one of my favorite lakes (not that I have time for it any more), just at first light, where I witnessed this [i1241.photobucket.com], a full fog rainbow.
Unfortunately I had no camera with me. I took an image with my phone - not great but you can just about see it. It was much more distinct than this suggests but it was fading by the time I had got myself into a position to take the photo.
i always thought the rainbows were big circles in the sky, and you could only see a semi-circle bit of it... but apparently they do actually touch the ground. how mad is that? you can actually stand inside the spot where it touches the earth. i saw a photo of a bloke doing it in the paper
Actually that was the last day I took the boat out and it was absolutely amazing. A few months later I sold everything - literally, everything that wouldn't fit into a 24 foot moving van - including the boat and trailer, took a job in San Diego, and never looked back. Got my eye on a nice mountain lake here though, April is coming and still have the Fenwick graphite and a 3 person raft. :-)
I see these on a regular basis on bright sunny mornings, occasionally in the evenings, where I live in the rural Lincolnshire Wolds especially in areas where I know where we have frost hollows, whilst out with my Husky or driving to early appointments.