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 high of 89 °F (31.7 °C) and a low of 65 °F (18.3 ...

Across the United States, a growing body of grid data now points to specific regions where a single storm or heat wave could trigger cascading, multi‑day blackouts. A new generation of outage maps and reliability assessments is turning that risk into something visible,