Looks like the bad tubulance probably hit somewhere E of Anchorage...flight track begins to get a bit funky and altitude/speed fluctuate too. Only 50-100 feet at a time but if that's true that's getting rocked around pretty good.

Interesting though...just looking at some other flights/airlines that usually go over Alaska...most stayed well to the South today...though ACA6 followed the exact same track as 88

http://www.flightradar24.com/data/ai...-fram/#8672e01