I was looking over the north-eastern skyline from a west coast location and notice something very bright for well over about 10 or 15 seconds, and then it faded completely. I didn't notice it before and I don't own any equipment that can see that far away but it looked like a star got really bright and then pulled into itself. Is it possible that I just watched a star go super-nova?
No. You likely saw a plane's landing lights, a satellite flare or a shooting star (at least something in the atmosphere or low earth orbit).
Two main reasons: