Front is trending colder and faster vs models. Globals see mid levels and don't drive front south. This front has tons of momentum and it will drive south fast and likely won't slow until reaching the Gulf tomorrow night. Strong surface high pressing cold downhill regardless of upper level winds. This will be a long duration freezing drizzle event with temps in 22 to 26 range across N TX. For E TX, the freezing line will be much trickier but I'll side with colder models and go with 29 to 34 during the event for the Tyler area. That means ice on elevated surfaces but roads should be decent here. For N TX, roads will be bad Wed and Thu.