Yup
What's more, it's possibly a double.
The primary rainbow had 'horns' and a concentric secondary rainbow.

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Tribs 🦇 ↓ dn ʎɐʍ sᴉɥʇ ↓🦇,
Wed 30 Dec 2009, 13:27,
archived)
That some kern arc?
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Ttssattsr,
Wed 30 Dec 2009, 13:29,
archived)
*reads up on Kern arcs*
Didn't appear to be a complete circle but then, didn't really check. Would be cool if it was though, those things are RARE.
Edit : might be parhelia (sun dogs) around the sun, with a circumzenithal arc above.
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Tribs 🦇 ↓ dn ʎɐʍ sᴉɥʇ ↓🦇,
Wed 30 Dec 2009, 13:36,
archived)
I thought about sun dogs, but they're not as interesting as kern arcs.
I refuse to believe.
(
Ttssattsr,
Wed 30 Dec 2009, 13:48,
archived)