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A well advertised longwave trough should amplify and swing into the southwest early next week. As this wave goes neg tilt and lifts into the midwest, it seems probable that a wound up surface low will develop somewhere in the high plains and lift northeast with it. Current forecast models generally cut this pretty hard and, if I had to guess, this is probably a NE/NW IA/MN show right now. But it currently looks as if this system is likely to bring significant winter weather to someone. System is still a good 7 days out and there are significant timing differences between the EC/GFS, but has had quite a lot of support on guidance over the past 3-4 days, enough that starting a thread for it may be justified. 

Hallo cold pools fans! Look at this extreme thermal  inversion recorded during a MeteoTracker session in the Fairbanks area (Alaska) on January 26 2021!
A difference of as much as 19.2° C (34.5° F) over a distance of approximately 5 km (3.1 miles), with an unbelievable temperature variation from -33.3° C (-27.9° F) to -14.1° C (6.6° F), was detected  at around 9 A.M. Alaska time.
The analysis performed on the MeteoTracker web platform (vertical profile graph and other tools) shows very well how strong the positive vertical temperature gradient was.

(By the way MeteoTracker is a low cost but accurate mini weather station for measurements on the go).