Snow and ice and snow are accumulating on bridges and overpasses of major highways, according to TxDOT. Motorists should drive with caution and expect traffic delays.

Moisture and a mix of precipitation should start to move into the metroplex from the southwest starting in the morning to the mid-morning hours.

North Texas is bracing for a wintry mix of snow and rain that is expected to begin overnight Wednesday as the National Weather Service upgraded several North Texas counties, including Dallas, from a winter storm watch to a warning.