Atlanta has seen nearly 1,000 flights grounded, while more than 34,000 Arkansans have lost power.

As the South prepped for snow and more cold starting Wednesday, residents in Southern California faced off with hurricane-strength winds.

Winter storm warnings have been declared from Illinois to New Jersey. And some areas will get a lot of snow. They will also get freezing rain and ice, blustery winds and frigid temperatures.

A major winter storm is bringing ice, snow and freezing rain from the Plains to the East Coast through Tuesday.

Some areas across the Great Lakes region have already received up to 3 feet of lake effect snow.

Through this weekend, the first significant arctic outbreak of winter will affect most of the country. Wind, flooding rain, and some tornado warnings have been issued across the U.S.

A storm packing heavy rain was sweeping through the Northeast early Wednesday, while winter weather brought tornadoes in the Midwest and South, flood threats in Florida and blizzards in the Northwest.

Large swaths of the U.S. have faced an intense winter storm over the past several days. Hundreds of thousands were without power and weather advisories were issued across the country.

Major winter storms continue to hit parts of the U.S. — upending travel, closing roads, and leaving thousands of households in the dark.

A major winter storm continued to bring heavy snow, blizzard conditions and significant ice from California to the Northeast on Thursday.

Heavy snow and high winds are causing blizzard conditions in the Upper Midwest. It's the latest stage of a three-day storm that's placed over half the country under winter weather warnings.

The winter storm will bring "a large swath of heavy snow from the West Coast to the Northeast" this week, the National Weather Service says.

The term forecasters are using to describe the overall weather pattern is "anomalous" — for its unusual cold and warmth. In California, it could be the coldest storm in years.

The weather service said "life-threatening cold temperatures and dangerous wind chills will create a potentially life-threatening hazard for travelers that become stranded" or people who work outside.

Nationwide, thousands of flights were canceled or delayed. In some places, temperatures dropped more than 30 degrees in an hour. Wind chills reached well below zero. Inches of snow fell.