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Bitter cold stretches south, but milder weather in forecast for some

Ariana Ingle, 6, makes a snow angel in a dusting of white Friday at Piedmont Park in Atlanta, Georgia.
Ariana Ingle, 6, makes a snow angel in a dusting of white Friday at Piedmont Park in Atlanta, Georgia.
  • NEW: Fast-moving cold front knifes through southeastern U.S., into Florida
  • NEW: At least nine deaths nationwide blamed on cold weather this week
  • NEW: Warmer air gradually will move eastward, with Northeast the last to see relief
  • Key West, Florida, southernmost point in continental U.S., has coldest day in 112 years

(CNN) -- Much of the country has turned up the heat during the deep freeze this week, but for some, the icy chill is on its way out.

The Deep South joined most of the rest of the nation with sub-zero temperatures Friday as a fast-moving cold front knifed its way down to Florida.

Combined with moisture from the Gulf of Mexico, the frigid air dumped a dangerous mix of ice and snow throughout the Southeast Thursday night and Friday morning, coating roadways with a slick glaze.

At least nine deaths around the country were blamed on this week's round of winter weather.

Relief is in sight for the Midwest this weekend, however, as higher temperatures make their way eastward, according to CNN meteorologist Chad Meyers. But the cold will tighten its grip before warmer air takes hold.

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Video: Cold-stricken Florida shivers
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An Arctic air mass over the Plains will cause severe wind chills through Saturday morning, the National Weather Service reported. The weather service has issued wind chill advisories for northwestern Missouri, northeastern Kansas, eastern Nebraska and southwestern Iowa, meaning the wind chill could be severe enough to cause frost bite or hypothermia.

The South will also experience higher temperatures by the end of the weekend but that region, too, will shiver a while longer.

Floridians braced for a second surge of Arctic air that promised to dip well into the southern parts of the state. Key West already set a record low temperature on Thursday, bottoming out at 47 degrees -- shattering the previous low set back in 1897. Temperatures on Sunday and Monday are expected to be in the low-to-mid-40s.

The citrus growing regions in Florida and Texas will have to keep an eye on their crops as the cold air remains in the area, Meyers said. In southern Texas, the National Weather Service has issued a hard freeze warning through late Saturday morning, saying that the conditions "will kill temperature-sensitive vegetation and could cause widespread damage or destruction to crops."

The East might not feel the warmth until Tuesday, Meyers said, and will continue to feel temperatures that are 10 to 20 degrees below average. Residents in New York City and the surrounding area, including northeastern New Jersey and southern Connecticut, won't feel temperatures above 30 degrees this weekend, the weather service reported. Saturday night is expected to be the coldest, with lows in the teens and below in some areas, the weather service said. iReport: Show CNN how how the cold is affecting you

While forecasts don't predict snow east of the Rocky Mountains in the coming days, Meyers said, a storm system in the far west could drop as much as 10 feet over the Canadian site of the 2010 Winter Olympics.

Flakes are expected Saturday and may fall in the coming days on a swath of land ranging from British Columbia to the northern Sierras of California, Meyers said.

The most snow -- about 10 feet -- is expected to fall in Canada's Whistler Blackcomb, the venue for the Olympic Alpine skiing event. The heavy snow is a plus for the event but could also bring threats of avalanches, Meyers said. 29-car pileup near Atlanta airport

Vancouver, British Columbia, hosts the 2010 Games, which begin with the opening ceremony on February 12. Alpine skiing begins the following day.

CNN's Dave Alsup, Hank Bishop and Sean Morris contributed to this report.