From the folks at storm2k FWIW
https://www.storm2k.org/phpbb2/viewtopic.php?f=22&t=124266&sid=787fecc734e41b517b5ad9277550bd24&start=1340
Upstream in western Nebraska where the high pressure will be centered, temperatures will be around –22° F. The animation shows the 1045 mb high center moving due south into the Texas panhandle, where the pressure already will be 1040 mb.
Some forecast temps on Jan. 6 at midnight CST:
..6...Enid
..7...Amarillo
..9...Oklahoma City
..9...Tulsa
13...Lubbock
14...Wichita Falls
15...Abilene
18...Midland
18...San Angelo
19...Dallas
21...Waco
24...Austin
26...San Antonio
32...Houston
34...El Paso
35...Corpus Christi
46...Brownsville
According to ICON, even more Arctic high pressure systems (each at least 1041 mb) will be lined up all the way across the Arctic to northwestern Siberia. Major cross polar flow sets up, ready to move into Canada and then the U. S.
We ignore ICON at our peril. I think this will be the real deal.