Ice and snow has been reported on highways across North Texas, including in the northern most parts of the region, according to a map of conditions from the Texas Department of Public Safety.

Melting snow: What to expect this weekend: Snow that melts during the day and creates pools of water on roads and sidewalks. When temperatures drop overnight, these puddles of water freeze into black ice. This scenario is especially common after snowstorms where the sun partially melts snow during the day, but the temperature drops again at night.

At least five North Texas counties, including Collin, Dallas, Denton, Kaufman and Tarrant, were under a winter storm warning as of 9 a.m.