The first crisp air of fall is on its way and the timing couldn't be better, as excellent two outdoor events are upon us this weekend. Friday night, the one-night-only arts festival FLUX 2011 will take over the streets of Castleberry Hill. This is reputed to be among the coolest events that happens in Atlanta and it's only 4 hours long, so plan accordingly. On Saturday night the Vinings Jubilee (in, you guessed it, Vinings) is throwing itself a 25th birthday party, replete with food, drink and a free concert from Yacht Rock Schooner. Get out and enjoy fall while it lasts, summer is probably just around the corner.