AccuWeather.com forecasters say Santa Claus will need more than Rudolph's red nose as he negotiates a nasty areas of snow, ice, rain and fog on Christmas Eve.

The parade of storms will continue across the northern tier of the nation through Christmas Eve.

However, an influx of warmer air on the southern edge of the storm track will add dense fog to the mix of precipitation that will continue to create major headaches for holiday travelers.

From the Pacific Northwest to the Eastern Seaboard, more flights were canceled and delayed Monday, while the combination of snow, strong winds and bitterly cold arctic air combined to create treacherous winter driving conditions.

Ongoing and new storms on the horizon will continue to add to delays on the ground and in the air through the Christmas holiday and beyond.

The Winter Weather Center and weather news stories discuss upcoming snow and ice events in the days ahead on a regional basis.

Chief Meteorologist Elliot Abrams says by tonight, warm air infiltrating into the system will add the dimension of heavy fog that will add to travel problems.

"(W)hen Santa actually arrives, the lyrics sticking in my mind are 'Then one foggy Christmas eve...' It will warm up and rain throughout the Northeast at midweek," says Abrams.

A band of 3 to 6 inches of snow will spread across the northern Plains into the Upper Midwest by tonight.

A second storm system will bring more snow by Christmas Eve. The Midwest Regional News story reports up to a foot of new snow could be on the ground from portions of Wisconsin and northern Illinois into northern Michigan.

As Expert Senior Meteorologist Bernie Rayno explains in the video report, the warm, moist air moving out of the Gulf of Mexico will limit snow totals south of the heaviest band of snow. The combination of ice, rain and fog will mean many parts of the country will not enjoy a white Christmas.

The storms are getting their start in the Pacific Northwest, where embattled residents and travelers continue to have to deal with widespread travel woes on Monday.

The West Regional News story reports snow will spread through the Cascades and the Intermountain West and south through the Sierra into the mountains of Southern California.

While more heavy snow blankets the mountains, a mixture of snow, ice and rain will spread across the Olympic Peninsula and down the Interstate 5 corridor into Oregon Wednesday.

Beginning tonight, another Pacific storm will move into California, producing heavy mountain snow and rain in lower elevations that could spark a new round of dangerous flooding and mudslides.

Winter arrived on Sunday with a blast of extremely dangerous arctic air that has spread from Washington to Maine. Strong winds have created subzero AccuWeather.com RealFeel® temperatures that can lead to hypothermia or severe frostbite in a matter of minutes.

Associated Press reports the frozen, partially snow-covered body of a 48-year-old woman was found early Sunday on a sidewalk near her home in Wheaton, Ill.

According to Expert Senior Meteorologist John Kocet,

An Alaska Airlines jet is de-iced on Sunday, Dec. 21, 2008, at the Seattle-Tacoma International Airport. (AP Photo/ The News Tribune, Peter Haley)

the temperature in the Chicagoland area stayed below zero for the entire day on Sunday.

As many as 150 flights were canceled Sunday at O'Hare International Airport in Chicago, one of the world's busiest airports, while the cold and snow ground air travel to a halt at Seattle-Tacoma International Airport.

Hundreds of flights were canceled Sunday at Sea-Tac airport, even though two of three runways remained open. Fox News Channel reports passengers remain stranded Monday because the airport is running short of de-icing fluid.

High winds delayed incoming flights by more than an hour at Newark International Airport in New Jersey and LaGuardia Airport in New York City Monday.