Below are links two simulations (about 25-26K each) of daytime sky phenomena
that appeared over Austin, Texas (approx. 30.29 north, 97.74 west), on October
25, 1999 (from about 17:45 to 18:15 local time, or 22:45-23:15 October 26
UTC). The simulations were prepared by Mr. Les Cowley, the author of
the site, "Atmospheric Haloes".
"A" and "B" are parhelia, also called
"sundogs"; "C" is an upper tangent arc. Those three all
touch a 22-degree halo. "D" is a 46-degree halo, and "E"
is a circumzenithal arc. "F" is the parhelic circle.
It is not certain if the next three were visible; I did not even have a piece of
paper with me on which to draw a rough sketch, and they will be speculative unless
a photograph turns up. "G", "H", and "I" are types of rare "Parry arcs" — a suncave arc, a sunvex arc, and another. There definitely was something at position "I" (left and right), but it's uncertain what they were.
| Austin sky 1999-10-25: straight horizon view and fisheye view |
