This is AA16 from San Francisco to JFK, flying over Cameron Park at 2:17 PM (iPhone Camera time, which I think is accurate). 21:17 UTC
It was climbing, and at the time of the the above photo it was about 27,000 feet, but looks like it started contrailing at around 26,000 feet. It continued out of sight to 31,000 feet (flying right to left here)
Sadly I only had my iPhone X, but still got some nice pics and footage:
It shows up on the GOES-16 Satellite as a line between SF and Lake Tahoe
And can be seen spreading and drifting Southeast.