A developing winter storm is threatening to drop snow, sleet and freezing rain on parts of Texas, Oklahoma and Arkansas.

An area stretching from Texas to Tennessee braced Wednesday for the possible arrival of freezing rain and snow even as some parts of the U.S. hit by the plunging polar vortex this week began to shake off its icy effects.

Cities that are not accustomed to seeing much snow or ice, like Dallas, could experience significant accumulations.