As the new year approaches, the U.S. is facing extreme winter weather conditions. Heavy snow and a bitter cold Arctic blast are expected, particularly affecting the Northeast, where winter storm warnings are in place with predictions of 12-24 inches of snow. Temperatures are plummeting across the Eastern U.S. after a period of record-setting heat, affecting travel and raising concerns for tourism. Meanwhile, Southern California is under a flood threat as heavy rains approach. This messy winter storm set to impact much of the country highlights a shift from mild weather to dangerously cold conditions, prompting alerts for hazardous roads and significant snowfall.