Keep an eye on this site if you're planning to go to the Courtyard Concerts show tomorrow. If it rains - and it looks like it will at this point - the rock delivery mission will be aborted. I'll post an update here if I get word that it's cancelled.
Update: It's not officially cancelled yet but the radar's looking pretty bad. Come at your own risk :)
Update, afterwards: Thanks to those of you who came out and braved the sprinkles to bask in the rock!