A winter storm was on a track to sweep through Texas and Louisiana, across the Gulf Coast and deep into Florida, significant snow and ice in tow.

A winter storm prompted a National Weather Service office in Louisiana to issue a first-ever blizzard warning. The storm is causing dangerous conditions from Texas to North Carolina.

Large swaths of southeast Texas and Louisiana and parts of southern Mississippi are under an extreme cold warning after a day of snow. Now, snow, slush and ice left on the ground will refreeze.