Very cold wind chill into Friday (Thurs. Feb. 20) Trump’s endorsement helped propel Ron DeSantis in the 2018 Republican gubernatorial primary. The "Zero Day" star and "Late Show" host Stephen Colbert let a haunting silence hang in the air for several seconds.

Cold air originating from the Arctic Ocean was dislodged earlier this week and spilled south across the United States. As a result, wind chills across the Eastern Plains bottomed out around 30 degrees below 0.

Wind chill temperatures are how cold people and animals feel when outside. It’s based on the the rate of heat loss from exposed skin caused by wind and cold, according to the NWS. Essentially, as wind increases, it draws heat from the body and drives down skin temperatures and internal body temperatures.

A larger Arctic air system across the U.S. has triggered an extreme cold weather warning in Texas, bringing subzero temperatures to some regions..

A First Alert Weather Day remains in effect on Thursday as wind chills dip to dangerous levels, making it feel like below zero across the Metroplex.