"From Chilly to Warm and Wet: Next Week's Weather Forecast"

The U.S. is expected to experience a dramatic shift from freezing temperatures to above-average warmth next week, with highs reaching the 60s and 70s in some southern areas. However, this warm spell brings the risk of flooding due to heavy rainfall and rapid snowmelt, particularly in the West Coast, South, and Ohio Valley/Appalachian regions. Forecasters are warning of potential urban and flash flooding, as well as significant rises in secondary river levels. Additionally, the warmer temperatures will lead to the melting of snowpack and the formation of fog and low clouds across various regions.