At 10klf, It rained briefly during Mickey Hart. It was strange as the sun was out, just one cloud right above my mics. I had about a yard square of ripstop nylon in my bag, as I wanted to experiment with it terms of building a little tarp over the rig.
Well I just draped the stuff over the mics and put a velcro tie around it at the bottom so it would not flap. It was only on for about half a song, but for the life of me I cannot figure out when I did it, I have yet to hear anything on the recording that sounds like all the movement that was going on. I have to do some more experimenting at some point.
Granted I have not really done any critical listening, but there seems to be no sign of the process and no loss of sound.
Here is a link to the show...
http://bt.etree.org/details.php?id=517592