A Christmas week arctic blast continues to sweep across the U.S. bringing dangerous blizzard conditions, life-threatening cold and creating travel woes for millions before the holiday.
The FOX Forecast Center is also tracking power outages, which will be a major concern as ice and snow are a threat to the power grid, and millions will face dangerously cold temperatures through Christmas.
Where is the winter storm now?
What are the active winter weather alerts for your area?
Countrywide, the National Weather Service has issued weather alerts that run the gamut of winter weather, from Wind Chill and Blizzard Warnings to Freeze Warnings.
Below is a look at the ongoing weather alerts impacting more than 300 million people.
What are the most extreme temperatures and highest snowfall totals so far?
The system is forecast to drop temperatures to extremes, even to negative 60 degrees in parts of the northern Plains.
Below are the latest winter weather extremes from the Christmas week blizzard.
Where are travel delays happening now?