Sheryl R. Garrison in northern Idaho submitted this photo, which she captured on August 13, 2016. She wrote:
After waking up to cirrus clouds I spent the day keeping an eye on the skies and was rewarded by beautiful irridescent clouds, the off-and-on appearance of a 22-degree halo, and then finally a circumzenithal arc.
After capturing several images I was in touch with Les Cowley at www.atoptics.co.uk and he very generously helped me identify in addition to the 22-degree halo and the circumzenithal arc, an upper tangent arc and two rare arcs … a supralateral arc and an upper suncave Parry arc!
He also sent a label enhanced version of my image [below] which was very helpful.
An exciting day with my head in the clouds!
Thanks, Sheryl, and congratulations on this cool image!
Bottom line: A 22-degree halo and circumzenithal arc, an upper tangent arc and two rare arcs … a supralateral and an upper suncave Parry.
Deborah Byrd created the EarthSky radio series in 1991 and EarthSky.org in 1994. Today, she serves as Editor-in-Chief of this website. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named 3505 Byrd in her honor. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says.