As millions of Americans hunker down for the winter storm, at least 23 states and Washington, D.C., have declared states of emergency.

Winter storms and extreme cold are forecast to wallop the U.S. with snow and ice through the weekend. Prepare for power outages and transportation issues.

Sunny with a high of 89 °F (31.7 °C). Winds WNW at 7 mph (11.3 kph). Night - Clear. Winds variable at 6 to 8 mph (9.7 to 12.9 kph). The overnight low will be 73 °F (22.8 °C). Mostly sunny today with a ...