One thing that all models agree on is that the coldest morning will be next Friday. Temperatures in Houston range from 15 (CMC/CMC ensembles) to 28 (GFS). Euro operational and ICON next coldest at 20F and 17F, respective on Friday. EC ensembles are close to GFS ensembles - considerably less cold, with a hard freeze of 25 on Friday followed by a couple light freezes Sat/Sun. I would add that the EC and ICON both indicate a short wave moving across Texas on Christmas Eve. No precip with the Euro, but the ICON does indicate light snow in south-central Texas. It doesn't go out far enough to see any extent of the snow. Moisture would be limited to down south. Nothing up in the D-FW area.
Still no really cold air in northern Canada, though it remains quite cold in Alaska. Generally, cold in Alaska means warmer down here. Watch for any warming in Alaska in the coming days. I'm hoping that the GFS is too cold and that we will remain above freezing. However, I suspect the end result will be a low around 24 on Friday +/- 5 degrees. Not as cold Sat/Sun/Mon. With that short wave moving across, it would not be impossible to see snow in Houston on Christmas Eve. Moisture would be limited, though. Not a repeat of 2004.
I've reinforced my wall as much as I can. My jet is fueled and ready to depart on a moment's notice. However, if there is a chance of snow here Christmas Eve then I'll hang around for that. I've always said that the only use for cold air is to produce snow.
