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Other things to look for

Date: 17 Jun 2004 04:04 (UTC)
From: (Anonymous)
Clouds like that (high cirrus) should also produce 22 degree halos (at any time of the day) or sundogs and upper tangent arcs (when sun is low in the sky). [Which you get depends on the ice crystal alignment in the clouds.] I highly suggest that you keep an eye out. And the camera handy, of course!

Sundogs can be very colourful - I've been priveleged to see some very nice ones. The one time I've seen cloud iridescence it took my breath away, the colours were so fantastic!

Me, I want to see the cirumzenithal arc. Supposed to be amazing colours.

"Rainbows, Halos, and Glories" by Robert Greenler is *the* book to get, but horrendously expensive. sundog.clara.co.uk is a very good free alternative.

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