The first winter storm of the season has left North Texas, but cold temperatures have frozen the water and slush that remained on the ground. TxDOT and cities have been working to clear ice from the roads, but there are still dangerous road conditions.

Any snow and ice that melts Friday is likely to refreeze overnight, and black ice could be a danger, according to the NWS.

Black ice is a thin layer that forms on surfaces such as roads, sidewalks and driveways when temperatures are 30 degrees or lower.