Quote:
Originally Posted by sunsetbeach wow ! are all those pictures yours ? If so I love the last one. I'm sure it's either a fluke with the lens or the way the oils are beaming off the sun, but man it's beautiful ! he he looks like the cloud blew the rainbow out. |
That event was the most amazing sky happening I've ever seen. I found out that those are called Fire Rainbows.
Technical stuff:
Quote:
In general, a circumhorizontal arc (or "fire rainbow") appears when the sun is high in the sky (i.e., higher than 58° above the horizon), and its light passes through diaphanous, high-altitude cirrus clouds made up of hexagonal plate crystals. Sunlight entering the crystals' vertical side faces and leaving through their bottom faces is refracted (as through a prism) and separated into an array of visible colors. When the plate crystals in cirrus clouds are aligned optimally (i.e., with their faces parallel to the ground), the resulting display is a brilliant spectrum of colors reminiscent of a rainbow. |
Here's some other photos from that day.
This is how it started.
Close up of the colors.
Starting to disappear.
August seems to be the month to see these down here. The above photos were taken in 2006. In 2007 we had another one that wasn't quite as impressive but still interesting.
That picture had another phenomena going on too... something called supernumerary rainbows. Rainbows in rainbows. My belief is you can never have too many rainbows!