January

The United States is experiencing one of its coldest Januarys in recent years, as Arctic air continues to sweep across the country. A combination of high-pressure ridges over the Pacific and Greenland has created a persistent cold air pattern, channeling frigid temperatures into the central, southern, and eastern regions of the country. This pattern, driven by atmospheric Rossby waves and jet stream fluctuations, has resulted in significant snowfall and below-average temperatures for much of the nation.