Severe weather was impacting the holiday travel plans of many Americans on Thursday morning, and threatening to impact more.

The remnants of the storm system that produced Wednesday’s deadly tornado outbreak were moving across the southeastern United States on Thursday. The National Weather Service said the system had weakened considerably, but it was still capable of producing heavy rainfall and localized severe thunderstorms throughout the Mid-Atlantic and Gulf Coast. The storms were expected to be the worst in Alabama and Georgia, but rain was falling as far north as New Jersey.

According to flight monitoring website FlightAware.com, 201 flights to or from United States destinations were cancelled as of 11:45 a.m. EST on Thursday morning. Another 1,720 were delayed. Both of those numbers had steadily risen throughout the morning.

A large percentage of the delays were the result of heavy storms at Hartsfield-Jackson International Airport, the world’s busiest airport in terms of passenger traffic. FlightAware indicated 111 flights to or from the airport had been cancelled, and another 703 were delayed.

More Americans than ever before are expected to travel this Christmas season. AAA projects that 100.5 million Americans were expected to make a journey of at least 50 miles in the 12-day period that began Wednesday morning. More than 90 percent of people were expected to drive to their destinations, but 5.8 million were expected to fly. That’s an increase of .7 percent over last year, AAA reported.

Regardless of whether they were traveling or not, there’s a good chance Americans would experience record temperatures on Christmas. The National Climate Data Center reported that there have been 3,912 record daily high temperatures this month, and that trend was expected to continue Christmas Eve and Christmas Day.

The Weather Channel reported temperatures in New York City reached 70 degrees early Christmas Eve morning, smashing the previous record of 63 degrees. The forecast was calling for a high of 64 degrees on Christmas, which would tie a 33-year-old record.

Still, some Western parts of the country were expected to see a White Christmas as Winter Storm Goliath arrived Thursday and continued to dump snow throughout Christmas and well into next week.

The National Weather Service had issued winter storm warnings in northern and central California, southeastern Oregon, northern Idaho, eastern Utah and western Colorado. The service had also issued winter weather advisories in parts of those states, as well as Washington, Arizona, Montana and Nevada. The service was also warning of the possibility of avalanches in Idaho, Utah and Colorado.

The Weather Channel reported that the storm could bring more than a foot of snow to higher elevations by Saturday night, though most of the affected areas are expected to see fewer than five inches. However, the channel’s meteorologists say the storm may intensify over the weekend, and early projections show that Goliath could dump up to a foot of snow over the Great Plains before next Tuesday.