I just noticed some high clouds hugging the southern horizon. This is the northeastern tip of a pretty significant amount of subtropical cirrus that shows up well on the IR image at the UofA site. http://www.atmo.arizona.edu/gifs/IRAZ.GIF Animating this image shows a battle between that motion from the southwest and a trough that will be responsible for the northwest wind tonight. I think the trough is going to win, so it should be clear. Clear Sky Clock is not well initialized, and even the transparency forecast map does not show this stuff arriving until tomorrow. The 10" and TV101 are already packed, so we're heading to Saddle Mountain. It's going to be in the upper 40's. Brrrr. Tom -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.