Houston winter storm: Latest weather forecast for this weekend

Confidence is high that a powerful arctic front will move into the region Saturday, bringing a rapid and significant drop in temperatures along with strong north winds. A Winter Storm Watch is in effect, signaling the potential for sleet or icing on roadways as colder air undercuts lingering moisture. An Extreme Cold Advisory has also been issued, highlighting the arrival of dangerously cold wind chills behind the front. The exact timing of when temperatures fall below freezing in the greater Houston area remains uncertain. Temps will plunge for areas north of town closer to Huntsville and College Station early Saturday, then most likely Saturday evening for Houston itself.