I don't know about the weather conditions, but if there was bad weather expected and it was foreseeable her plane would be delayed, then it was rude to risk it. But if it was just an odd bit of weather, then Jennifer wasn't rude a bit for doing something on her own time. She was correct to apologize for the inconvenience, but I don't think it needed to be anything more than that. For heaven's sake, Oprah's acting like she was intentionally stood up. It's hardly uncommon for stars to be tightly booked and do a variety of different performances in a short time span. Jennifer didn't control the weather. It was just bad luck.