Disclaimer: I recognize this is not astronomy content I am posting to an astronomy list. Fog is rare in the Sonoran Desert. Even more rare is a fogbow. http://www.pbase.com/polakis/image/159003089 Some more foggy desert photos, all taken from South Mountain Park. http://www.pbase.com/polakis/desert_fog_2015 Tom -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.