Called a fall streak, this is a phenomenon that many don’t often get to see. It is caused by a combination of ice crystals and jet travel that disturbs the flow of air. While I took this picture toward the end of last December, it was still very mild out, but apparently colder in the upper atmosphere.
This one shows the right edge of the fall streak. I was attempting to show how the entire sky had a unique cloud texture. The fall streak was visible for well over an hour and traveled from West to East before finally dissipating. Fall streaks are also called Hole clouds, Punch Hole clouds or Hole Punch clouds. Read more about them over here.