A powerful polar vortex is set to grip much of the United States next week, as seen on a map, with meteorologists predicting plunging temperatures and widespread disruptions.
Night - Mostly cloudy with a 59% chance of precipitation. Winds SSE. The overnight low will be 14 °F (-10 °C). Cloudy with a high of 30 °F (-1.1 °C) and a 59% chance of precipitation. Winds ...