To be fair HAARP has admitted they can artificially generate the aurora, but I don't think that was the case this past weekend. I'm sorry you didn't get to see them. I think a lot of people didn't know. The local news stations often mention there is a possibility, but usually once they do that it kills the chances. This was a rare exception. I have an app on my phone that I use to track the conditions and it sends me an alert when the chances are high that they might be visible.