Houston has been experiencing below-average temperatures as a polar vortex ushers in cooler conditions across the state.

The United States is currently experiencing an intense cold front linked to the so-called Arctic “polar vortex”.  The icy air that has particularly affected the central and eastern United States is now descending as far as the Gulf Coast.

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the South.

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to millions.

The colder-than-normal temperatures in Houston are part of a larger pattern of Arctic air sweeping through Texas and much of the southern United States.

Here's the latest on the winter storm. A historic winter storm is poised to produce potentially record-breaking snows from coastal Texas to northern Florida late Monday into Tuesday. The event comes as an Arctic blast affects more than half the U.

A winter storm that is expected to begin in Texas next week could end up bringing snow and ice to parts of Florida.

As a slug of polar vortex-fueled arctic air overtakes the eastern two-thirds of the U.S. next week, a storm system could bring snow, sleet and freezing rain to places deep in the heart of Texas, but the forecast isn’t a lock just yet.

The unseasonable chill that has swept through the eastern half of the US defies last year's mild winters and the South's typical warmth.

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into next week, impacting millions of Americans in nearly all of the contiguous states.

As snow begins to cover the Texas Panhandle amid the polar vortex, here's what the state can expect as weather conditions begin to shift.

Part of Mississippi under extreme cold warning after winter storm dropped snow across the Gulf Coast. When will temperatures warm up?