Extreme weather conditions from coast to coast put more than half the U.S. in the path of rough conditions. Storms across the nation's eastern half forced airlines to cancel more than 3,000 flights nationwide Monday. Many schools closed early in the mid-Atlantic states, where high winds and tornadoes were in the forecast. Blizzards buried parts of Michigan, Wisconsin and Minnesota while torrential rains flooded homes and washed out roads in Hawaii. California is dealing with unusually high temperatures for this time of year. Areas near San Francisco could see temperatures in the high 80s.

Millions across the northeastern United States contended with treks to school and work as they dug out from a major storm that blanketed the region with snow, canceled flights, disrupted transit and downed power lines. Snow moved north Tuesday giving way to sunshine in parts of the region, but National Weather Service forecasters warned another storm originating in the Great Lakes is right around the corner. In New York City, Mayor Zohran Mamdani declared that more 900,000 students in the nation's largest public school system had a regular day. Mamdani invited kids to pelt him with snowballs over his decision.

Tens of thousands of people are entering their sixth day with no electricity as the Carolinas and Virginia prepare for a significant winter storm that could bring more snowfall than some parts of North Carolina have seen in years. The National Weather Service says arctic air moving into the Southeast will cause already frigid temperatures to plummet into the teens Friday night in cities like Nashville, Tennessee. With another wave of dangerous cold heading for the U.S. South, experts say the risk of hypothermia heightens for people in parts of Mississippi and Tennessee trapped at home without power in subfreezing temperatures.

A surge of arctic air is bringing strong winds, heavy snow and frigid temperatures to the Great Lakes and Northeast, a day after a bomb cyclone that hit the northern U.S. Tens of thousands of customers were without power early Tuesday, with Michigan hardest hit. The National Weather Service predicts snow squalls and gusty winds for the Eastern U.S. New York's governor warned of whiteout conditions in parts of the state. In Michigan, snow piled up quickly on Monday, and high waves on Lake Superior sent cargo ships into harbors for shelter.