A spell of dangerously cold weather is creeping through the area this weekend that will drop high temperatures below zero with wind chills as cold as -40 possible at times. With these temperatures and wind chill values, injury or worse could occur in a very short amount of time if not taken seriously or cautiously.

The polar vortex is a large area of low pressure, winds, and cold air surrounding both of the Earth’s poles, according to the National Weather Service. The term “vortex” refers to the circulation of air that helps keep the colder air near the Poles. This vortex has always existed and is not something new.

We start the following work week with a polar vortex. This will bring in unseasonably cold air to the region and wind chill temperatures back to the negatives. But what is a polar vortex? The polar vortex is the jet stream above the Arctic Circle.

Abnormal weather events and severe winter storms could be caused by a disrupted polar vortex. Find out here how the polar vortex affects the weather.

Houston, Texas, is experiencing below-average temperatures as a polar vortex ushers in cooler ... chill gripping the region. The National Weather Service predicts a 40% chance of showers ...

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

A new blast of Arctic air sweeping from north to south will bring bone-chilling temperatures to millions of Americans this weekend and next week.

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.

New York City prepares for severe winter conditions with heavy snowfall and a deep freeze expected this weekend. Temperatures could feel as cold as 15 degrees below zero with wind chills potentially reaching-15 degrees.

Nearly 300M Americans face an arctic blast with sub-zero wind chills, heavy snow, and record-low temperatures ahead