yah last year i got out early too, we had that arctic blast , and in my area we got down to -20 lol.
This year is more normal, with the past 3 years have decent ice the weekend before thanksgiving (just like what you're saying ) at 10,500 feet.
last year i was fishing an ice shelf with open water next to it at about 5-6 inches.
this year I'm over a foot of ice on thanksgiving!
my big lake is even capped over 2 weeks early, and i'll probably risk it for the biscuit and go out Saturday! maybe NOT break though lol