Elmo was that a shot of the ISS passing over or another satellite? There wasn't a periodic brightening so I don't think it was a jet and it was fairly consistent with it's brightness through the flight so I don't think it was an iridium flare (reflective satellite)
Clouds do make things tricky. I was just outside and saw that it was clear. I may try and go get the 32" telescope up and running...although it's been buggy lately.