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 - Clear. Winds SW. The overnight low will be 13 °F (-10.6 °C). Mostly sunny with a high of 49 °F (9.4 °C). Winds variable at 3 to 10 mph (4.8 to 16.1 kph). Partly cloudy today with a ...