I've always wanted to see the Aurora Borealis, but never had the opportunity, since it is so rarely visible in my area (Pennsylvania).
However, last week was apparently a rare opportunity of exceptional visibility.
Unfortunately, I missed my opportunity, as I did not find out about it until the next day.
Are there any good resources or strategies for anticipating opportunities like this? Are coronal mass ejections like the one that precipitated this event predictable? If so, are such predictions available to the amateur public?