The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...

This blast of frozen temperatures is tied to a polar vortex... but what is that? Air spins around the notoriously cold North and South Poles. When the air is spinning fast, it's stable, but when it is ...

We are in the thick of it now with some areas experiencing the coldest air temperatures since the polar vortex of the 2019 ...

WASHINGTON — Get ready for extreme cold weather in D.C. and most of the U.S. over the next few days. The polar vortex has ...

Still, several Colorado school districts will start late on Tuesday as the state waits out the last of subzero temperatures.

Here's the latest on the winter storm.A historic winter storm is poised to produce potentially record-breaking snows from ...

Several businesses and organizations have announced closings and cancellations ahead of the extremely cold temperatures.

C in the Northern Plains and Upper Midwest, into the teens in the central Plains and Midwest and near 30 degrees in parts of the South on Saturday ...

Tom Brady won a Super Bowl at 43. Lewis Hamilton is preparing to race for Ferrari in Formula 1 at 40. Serena Williams reached ...

According to the European model, there's a chance that the air temperature at MSP could hit -20°F for the first time since ...

A potent cold front will open the door to frigid Arctic air, with some of the coldest conditions in years set to spread ...

ANNAPOLIS, Md. (AP) — A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend kept much of the country east of the Rockies ...