Winter Storm Warnings are in effect along I-10 and areas to the north, including Houston. Already this morning, icing is starting to occur as temperatures fall to around and below freezing.
Expect periods of rain, icing, and even some snow through the day on Tuesday. Travel will be treacherous. Temperatures will then descend into the 15-25 degree range overnight tonight, along with colder wind chills, and likely cause re-freezing on the roads.
There is potential for a rare "flash freeze" during which liquid precipitation on the ground suddenly freezes over as temps plunge into the 20s during the afternoon.
Whatever roads freeze over Tuesday afternoon will likely stay frozen over until possibly Wednesday afternoon when temperatures climb above freezing.