Well I'm still traveling on my arcoss the US tour and am currently at Yellowstone KWYS. During my last flight I U12 in Idaho and flew a VFR flight up to old faithful then over to Yellowstone. As luck would have it I flew over Old Faithful at about 5 mins to the hour and she was gushing then slowed to a clam and was done. My question is was I lucky to arrive there around the top of the hour or does she go off when you are close and then ends once you fly pass her?NP

Good question. And sorry, but I don't know! I too have flown over Yellowstone and saw Old Faithful going off. I wasn't paying attention to the time of day, but I have a feeling that she goes off when you are close and then ends once you fly pass her. Just a guess. On the same side of that coin I know there are events that only happen when you are in a place at the right time, such as the fireworks display in Las Vegas.Jim