Texas, Polar vortex

Houston has been experiencing below-average temperatures as a polar vortex ushers in cooler conditions across the state.
Temperatures are dropping in Texas on New Year's Eve ahead of next week's polar vortex, which will bring snowfall to much of ...
Early weather models show a chance of a polar vortex hitting North Texas next week that could send temperatures plunging below freezing. It is too early to tell how severe the cold snap will be ...
The United States is currently experiencing an intense cold front linked to the so-called Arctic “polar vortex”.  The icy air ...
As the West Coast braces for fiery winds and the Northeast shivers under a polar vortex, the nation finds itself caught between two extreme weather fronts.